diff --git a/src/main/java/org/to/telegramfinalproject/Models/ChannelAdmin.java b/src/main/java/org/to/telegramfinalproject/Models/ChannelAdmin.java
new file mode 100644
index 0000000..ebe32fd
--- /dev/null
+++ b/src/main/java/org/to/telegramfinalproject/Models/ChannelAdmin.java
@@ -0,0 +1,136 @@
+package org.to.telegramfinalproject.Models;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+public class ChannelAdmin {
+    private String channelId;
+    private UUID userId;
+    private LocalDateTime addedAt;
+    private UUID addedBy;
+    private String role; // e.g., "owner", "admin"
+    private boolean canPostMessage;
+    private boolean canEditSetting;
+    private boolean canDeleteMessages;
+    private boolean canDeleteMembers;
+    private boolean canAddMembers;
+
+    public ChannelAdmin(String channelId, UUID userId, LocalDateTime addedAt, UUID addedBy,
+                        String role, boolean canPostMessage, boolean canEditSetting, boolean canDeleteMessages,
+                        boolean canDeleteMembers, boolean canAddMembers) {
+        this.channelId = channelId;
+        this.userId = userId;
+        this.addedAt = addedAt;
+        this.addedBy = addedBy;
+        this.role = role;
+        this.canPostMessage = canPostMessage;
+        this.canEditSetting = canEditSetting;
+        this.canDeleteMessages = canDeleteMessages;
+        this.canDeleteMembers = canDeleteMembers;
+        this.canAddMembers = canAddMembers;
+    }
+
+    // Overloaded constructor with default values from SQL
+    public ChannelAdmin(String channelId, UUID userId, UUID addedBy) {
+        this.channelId = channelId;
+        this.userId = userId;
+        this.addedBy = addedBy;
+    }
+
+    // Getters and setters
+    public String getChannelId() {
+        return channelId;
+    }
+
+    public void setChannelId(String channelId) {
+        this.channelId = channelId;
+    }
+
+    public UUID getUserId() {
+        return userId;
+    }
+
+    public void setUserId(UUID userId) {
+        this.userId = userId;
+    }
+
+    public LocalDateTime getAddedAt() {
+        return addedAt;
+    }
+
+    public void setAddedAt(LocalDateTime addedAt) {
+        this.addedAt = addedAt;
+    }
+
+    public UUID getAddedBy() {
+        return addedBy;
+    }
+
+    public void setAddedBy(UUID addedBy) {
+        this.addedBy = addedBy;
+    }
+
+    public String getRole() {
+        return role;
+    }
+
+    public void setRole(String role) {
+        this.role = role;
+    }
+
+    public boolean getCanPostMessage() {
+        return canPostMessage;
+    }
+
+    public void setCanPostMessage(boolean canPostMessage) {
+        this.canPostMessage = canPostMessage;
+    }
+
+    public boolean getCanEditSetting() {
+        return canEditSetting;
+    }
+
+    public void setCanEditSetting(boolean canEditSetting) {
+        this.canEditSetting = canEditSetting;
+    }
+
+    public boolean getCanDeleteMessages() {
+        return canDeleteMessages;
+    }
+
+    public void setCanDeleteMessages(boolean canDeleteMessages) {
+        this.canDeleteMessages = canDeleteMessages;
+    }
+
+    public boolean getCanDeleteMembers() {
+        return canDeleteMembers;
+    }
+
+    public void setCanDeleteMembers(boolean canDeleteMembers) {
+        this.canDeleteMembers = canDeleteMembers;
+    }
+
+    public boolean getCanAddMembers() {
+        return canAddMembers;
+    }
+
+    public void setCanAddMembers(boolean canAddMembers) {
+        this.canAddMembers = canAddMembers;
+    }
+
+    @Override
+    public String toString() {
+        return "ChannelAdmin{" +
+                "channelId='" + channelId + '\'' +
+                ", userId=" + userId +
+                ", addedAt=" + addedAt +
+                ", addedBy=" + addedBy +
+                ", role='" + role + '\'' +
+                ", canPost=" + canPostMessage +
+                ", canEdit=" + canEditSetting +
+                ", canDeleteMessages=" + canDeleteMessages +
+                ", canDeleteMembers=" + canDeleteMembers +
+                ", canAddMembers=" + canAddMembers +
+                '}';
+    }
+}
diff --git a/src/main/java/org/to/telegramfinalproject/Models/MessageReceipt.java b/src/main/java/org/to/telegramfinalproject/Models/MessageReceipt.java
new file mode 100644
index 0000000..7247f76
--- /dev/null
+++ b/src/main/java/org/to/telegramfinalproject/Models/MessageReceipt.java
@@ -0,0 +1,58 @@
+package org.to.telegramfinalproject.Models;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+public class MessageReceipt {
+    private UUID messageId;
+    private UUID userId;
+    private LocalDateTime readAt;
+
+    public MessageReceipt(UUID messageId, UUID userId, LocalDateTime readAt) {
+        this.messageId = messageId;
+        this.userId = userId;
+        this.readAt = readAt;
+    }
+
+    // Overloaded constructor if readAt is not provided (use current timestamp)
+    public MessageReceipt(UUID messageId, UUID userId) {
+        this.messageId = messageId;
+        this.userId = userId;
+        this.readAt = LocalDateTime.now();
+    }
+
+    // Getters
+    public UUID getMessageId() {
+        return messageId;
+    }
+
+    public UUID getUserId() {
+        return userId;
+    }
+
+    public LocalDateTime getReadAt() {
+        return readAt;
+    }
+
+    // Setters
+    public void setMessageId(UUID messageId) {
+        this.messageId = messageId;
+    }
+
+    public void setUserId(UUID userId) {
+        this.userId = userId;
+    }
+
+    public void setReadAt(LocalDateTime readAt) {
+        this.readAt = readAt;
+    }
+
+    @Override
+    public String toString() {
+        return "MessageReceipt{" +
+                "messageId=" + messageId +
+                ", userId=" + userId +
+                ", readAt=" + readAt +
+                '}';
+    }
+}
diff --git a/src/main/resources/init.sql b/src/main/resources/init.sql
index b4730fa..47eb518 100644
--- a/src/main/resources/init.sql
+++ b/src/main/resources/init.sql
@@ -3,7 +3,7 @@ CREATE TABLE IF NOT EXISTS users(
     internal_uuid UUID PRIMARY KEY,
     username VARCHAR(50) UNIQUE NOT NULL,
     password TEXT NOT NULL,
-    profile_name VARCHAR(100),
+    profile_name VARCHAR(100) NOT NULL,
     bio TEXT,                               --(Bonus)
     image_url TEXT,
     status VARCHAR(20) DEFAULT 'offline',
@@ -87,8 +87,8 @@ CREATE TABLE IF NOT EXISTS channel_admins (
     added_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     added_by UUID REFERENCES users(internal_uuid),
     role VARCHAR(20) DEFAULT 'admin',              --owner, admin
-    can_post BOOLEAN DEFAULT TRUE,
-    can_edit BOOLEAN DEFAULT FALSE,
+    can_post_messages BOOLEAN DEFAULT TRUE,
+    can_edit_setting BOOLEAN DEFAULT FALSE,          -- profile, bio, name, etc.
     can_delete_messages BOOLEAN DEFAULT FALSE,
     can_delete_members BOOLEAN DEFAULT FALSE,
     can_add_members BOOLEAN DEFAULT TRUE,