diff --git a/src/GameLogic/CastleSiege/CastleSiegeConfiguration.cs b/src/GameLogic/CastleSiege/CastleSiegeConfiguration.cs
index 092995c..4a54510 100644
--- a/src/GameLogic/CastleSiege/CastleSiegeConfiguration.cs
+++ b/src/GameLogic/CastleSiege/CastleSiegeConfiguration.cs
@@ -4,42 +4,82 @@
 
 namespace MUnique.OpenMU.GameLogic.CastleSiege;
 
+using System.ComponentModel;
+using System.Linq;
+using System.Text.Json.Serialization;
+
 /// <summary>
-/// Configuration for the Castle Siege cycle timings.
-/// Rides on the plugin custom-configuration system (no dedicated database table in P1).
+/// Configuration for the Castle Siege cycle. Rides on the plugin custom-configuration system (no dedicated
+/// database table). A cycle runs: Ownership -> Registration -> Preparation -> Siege(war) -> Settlement, and
+/// auto-starts when the current day/time matches <see cref="OpenDays"/> + <see cref="RegistrationOpenTimes"/>.
+/// The AdminPanel-friendly properties (OpenDays checkboxes, minute/second durations) are proxies over the
+/// runtime fields, which are hidden from the editor to keep the form clean.
 /// </summary>
 public class CastleSiegeConfiguration
 {
-    // --- Schedule &amp; period lengths (editable in the AdminPanel) ---
-    // A cycle runs: Ownership -> Registration -> Preparation -> Siege(war) -> Settlement -> Ownership.
-    // It auto-starts when the current day/time matches RegistrationOpenDays + RegistrationOpenTimes.
-
     /// <summary>
-    /// Gets or sets the days of week on which registration auto-opens (UTC). Empty = every day
-    /// (still requires a time in <see cref="RegistrationOpenTimes"/>); with no times set, auto-start is off.
+    /// Gets or sets the days of week on which registration auto-opens (UTC). None = every day (still needs a
+    /// time). Editable in the AdminPanel as check boxes; proxies the runtime <see cref="RegistrationOpenDays"/>.
     /// </summary>
-    public IList<DayOfWeek> RegistrationOpenDays { get; set; } = new List<DayOfWeek>();
+    [JsonIgnore]
+    public CastleSiegeScheduleDays OpenDays
+    {
+        get
+        {
+            var days = CastleSiegeScheduleDays.None;
+            foreach (var day in this.RegistrationOpenDays)
+            {
+                days |= (CastleSiegeScheduleDays)(1 << (int)day);
+            }
+
+            return days;
+        }
+
+        set => this.RegistrationOpenDays = Enum.GetValues<DayOfWeek>()
+            .Where(day => value.HasFlag((CastleSiegeScheduleDays)(1 << (int)day)))
+            .ToList();
+    }
 
     /// <summary>
     /// Gets or sets the times of day (UTC) at which a new cycle opens registration.
-    /// Empty = no auto-start (admins start cycles manually via chat command).
+    /// Empty = no auto-start (admins start cycles manually via the chat command).
     /// </summary>
     public IList<TimeOnly> RegistrationOpenTimes { get; set; } = new List<TimeOnly>();
 
-    /// <summary>Gets or sets how long the registration period lasts (guilds may register).</summary>
-    public TimeSpan RegistrationDuration { get; set; } = TimeSpan.FromMinutes(5);
+    /// <summary>Gets or sets how long the registration period lasts, in minutes (guilds may register).</summary>
+    [JsonIgnore]
+    public int RegistrationMinutes
+    {
+        get => (int)this.RegistrationDuration.TotalMinutes;
+        set => this.RegistrationDuration = TimeSpan.FromMinutes(Math.Max(1, value));
+    }
 
-    /// <summary>Gets or sets how long the preparation period lasts (between registration close and the war).</summary>
-    public TimeSpan PreparationDuration { get; set; } = TimeSpan.FromMinutes(2);
+    /// <summary>Gets or sets how long the preparation period lasts, in minutes (between registration and war).</summary>
+    [JsonIgnore]
+    public int PreparationMinutes
+    {
+        get => (int)this.PreparationDuration.TotalMinutes;
+        set => this.PreparationDuration = TimeSpan.FromMinutes(Math.Max(0, value));
+    }
 
-    /// <summary>Gets or sets how long the war (siege) period lasts.</summary>
-    public TimeSpan SiegeDuration { get; set; } = TimeSpan.FromMinutes(10);
+    /// <summary>Gets or sets how long the war (siege) period lasts, in minutes.</summary>
+    [JsonIgnore]
+    public int SiegeMinutes
+    {
+        get => (int)this.SiegeDuration.TotalMinutes;
+        set => this.SiegeDuration = TimeSpan.FromMinutes(Math.Max(1, value));
+    }
 
     /// <summary>
-    /// Gets or sets how long the guild master must hold the Crown (with both switches held and all gates down)
-    /// to capture the throne. The client shows a 60-second countdown, so 60s matches the on-screen timer.
+    /// Gets or sets how long the guild master must hold the Crown to capture the throne, in seconds.
+    /// The client shows a 60-second countdown, so 60 matches the on-screen timer.
     /// </summary>
-    public TimeSpan CrownHoldDuration { get; set; } = TimeSpan.FromSeconds(60);
+    [JsonIgnore]
+    public int CrownHoldSeconds
+    {
+        get => (int)this.CrownHoldDuration.TotalSeconds;
+        set => this.CrownHoldDuration = TimeSpan.FromSeconds(Math.Max(1, value));
+    }
 
     /// <summary>
     /// Gets or sets the registration fee (in zen) a guild master must pay to register the guild
@@ -47,21 +87,46 @@ public class CastleSiegeConfiguration
     /// </summary>
     public int RegistrationFee { get; set; } = 100000;
 
-    // --- Persisted runtime state (P4 persistence) ---
-    // These ride on the plugin's custom-configuration JSON (already stored in PostgreSQL), so the castle
-    // owner and the current cycle survive server restarts without a dedicated database table/migration.
-    // Written by CastleSiegeEventPlugIn whenever the state changes; read back on startup to restore it.
+    // --- Runtime fields (hidden from the AdminPanel; proxied by the friendly properties above) ---
+
+    /// <summary>Gets or sets the days of week registration auto-opens (UTC). Empty = every day.</summary>
+    [Browsable(false)]
+    public IList<DayOfWeek> RegistrationOpenDays { get; set; } = new List<DayOfWeek>();
+
+    /// <summary>Gets or sets how long the registration period lasts.</summary>
+    [Browsable(false)]
+    public TimeSpan RegistrationDuration { get; set; } = TimeSpan.FromMinutes(5);
+
+    /// <summary>Gets or sets how long the preparation period lasts.</summary>
+    [Browsable(false)]
+    public TimeSpan PreparationDuration { get; set; } = TimeSpan.FromMinutes(2);
+
+    /// <summary>Gets or sets how long the war (siege) period lasts.</summary>
+    [Browsable(false)]
+    public TimeSpan SiegeDuration { get; set; } = TimeSpan.FromMinutes(10);
+
+    /// <summary>Gets or sets how long the guild master must hold the Crown to capture the throne.</summary>
+    [Browsable(false)]
+    public TimeSpan CrownHoldDuration { get; set; } = TimeSpan.FromSeconds(60);
+
+    // --- Persisted runtime state (hidden from the AdminPanel) ---
+    // These ride on the plugin's custom-configuration JSON (stored in PostgreSQL), so the castle owner and the
+    // current cycle survive server restarts. Written by CastleSiegeEventPlugIn; restored on startup.
 
     /// <summary>Gets or sets the persisted castle owner guild name (null = unowned).</summary>
+    [Browsable(false)]
     public string? PersistedOwnerGuildName { get; set; }
 
     /// <summary>Gets or sets the persisted current phase, so the cycle resumes after a restart.</summary>
+    [Browsable(false)]
     public CastleSiegePhase PersistedPhase { get; set; } = CastleSiegePhase.Ownership;
 
     /// <summary>Gets or sets when the persisted phase started (UTC), or null if never persisted.</summary>
+    [Browsable(false)]
     public DateTime? PersistedPhaseStartedUtc { get; set; }
 
     /// <summary>Gets or sets the persisted registered guild names for the current cycle.</summary>
+    [Browsable(false)]
     public IList<string> PersistedRegisteredGuilds { get; set; } = new List<string>();
 
     /// <summary>
@@ -87,3 +152,35 @@ public class CastleSiegeConfiguration
         return this.RegistrationOpenTimes.Any(p => p.IsBetween(earlier, nowTime));
     }
 }
+
+/// <summary>
+/// The days of week on which the Castle Siege registration auto-opens. A [Flags] enum so the AdminPanel
+/// renders it as a set of check boxes.
+/// </summary>
+[Flags]
+public enum CastleSiegeScheduleDays
+{
+    /// <summary>No day (auto-start day-unrestricted; still needs a time).</summary>
+    None = 0,
+
+    /// <summary>Sunday.</summary>
+    Sunday = 1 << 0,
+
+    /// <summary>Monday.</summary>
+    Monday = 1 << 1,
+
+    /// <summary>Tuesday.</summary>
+    Tuesday = 1 << 2,
+
+    /// <summary>Wednesday.</summary>
+    Wednesday = 1 << 3,
+
+    /// <summary>Thursday.</summary>
+    Thursday = 1 << 4,
+
+    /// <summary>Friday.</summary>
+    Friday = 1 << 5,
+
+    /// <summary>Saturday.</summary>
+    Saturday = 1 << 6,
+}