diff --git a/src/pages/chat/chat.ts b/src/pages/chat/chat.ts
index aa18aa4..a41a669 100755
--- a/src/pages/chat/chat.ts
+++ b/src/pages/chat/chat.ts
@@ -375,18 +375,56 @@ class ChatElement extends HTMLElement {
                 return;
             }
 
-            this.selectedMemberId = String(memberId);
+            this.selectedMember = member;
             
             const chatHeader = this.shadowRoot?.querySelector('#chat-header');
             const messagesContainer = this.shadowRoot?.querySelector('#messages');
 
             if (!chatHeader || !messagesContainer) return;
             
-            const memberAddress = String(memberId);
-            const emojis = await addressToEmoji(memberAddress);
+            const memberId = this.selectedMember[0];
+            const emojis = await addressToEmoji(memberId);
             chatHeader.textContent = `Chat with ${emojis}`;
             messagesContainer.innerHTML = '';
 
+            // Filter processes for the children of current process
+            const children = await service.getChildrenOfProcess(this.processId);
+
+            let messagesProcess: Process | null = null;
+            console.log(this.processRoles);
+            const processRoles = this.processRoles;
+            for (const child of children) {
+                const roles = await this.getRoles(child);
+                // Check that we and the other members are in the role
+                if (!service.isChildRole(processRoles, roles)) {
+                    console.error('Child process roles are not a subset of parent')
+                    continue;
+                }
+                if (!service.rolesContainsMember(roles, this.selectedMember)) {
+                    console.error('Member is not part of the process');
+                    continue;
+                }
+                if (!service.rolesContainsUs(roles)) {
+                    console.error('We\'re not part of child process');
+                    continue;
+                }
+                messagesProcess = child;
+            }
+
+            if (messagesProcess === null) {
+                console.log('Create a new child process');
+                // We need to create a new process
+                try {
+                    const res = await service.createDmProcess(member, this.processId);
+                    await service.handleApiReturn(res);
+                } catch (e) {
+                    console.error(e);
+                    return;
+                }
+            } else {
+                console.log('Found child process', messagesProcess);
+            }
+
             const dbRequest = indexedDB.open('4nk');
             
             dbRequest.onerror = () => {
diff --git a/src/services/service.ts b/src/services/service.ts
index b13d8bc..29371c2 100755
--- a/src/services/service.ts
+++ b/src/services/service.ts
@@ -326,6 +326,69 @@ export default class Services {
     }
   }
 
+  public async createDmProcess(
+      otherMember: string[], 
+      parentProcess: string,
+  ): Promise<ApiReturn> {
+      try {
+          console.log('🚀 Début createMessagingProcess');
+          console.log('📝 Parent Process ID:', parentProcess);
+          console.log('👥 Other Member:', otherMember);
+
+          if (!this.isPaired()) {
+              throw new Error('Device not paired');
+          }
+
+          const myAddresses = await this.getMemberFromDevice();
+          console.log('🔑 Mes adresses:', myAddresses);
+
+          if (!myAddresses) {
+              throw new Error('No paired member found');
+          }
+
+          const messagingTemplate = {
+              parent_id: parentProcess,
+              message: '',
+              roles: {
+                  dm: {
+                      members: [
+                          { sp_addresses: myAddresses },
+                          { sp_addresses: otherMember }
+                      ],
+                      validation_rules: [
+                          {
+                              quorum: 0.01,
+                              fields: ['message'],
+                              min_sig_member: 0.01,
+                          },
+                      ],
+                      storages: [storageUrl]
+                  }
+              }
+          };
+
+          console.log('📋 Template final:', JSON.stringify(messagingTemplate, null, 2));
+          console.log('👥 Création du process message comme enfant de:', parentProcess);
+
+          const relayAddress = this.getAllRelays()[0]['spAddress'];
+          const feeRate = 1;
+          const initState = JSON.stringify(messagingTemplate);
+
+          const result = this.sdkClient.create_new_process(
+              JSON.stringify(messagingTemplate), 
+              null,
+              relayAddress, 
+              feeRate
+          );
+          // console.log('✅ Process message créé:', result);
+
+          return result;
+      } catch (e) {
+          console.error('❌ Erreur:', e);
+          throw e;
+      }
+  }
+
   // Create prd update for current process and update
   public createPrdUpdate(processId: string, stateId: string): ApiReturn {
     try {
@@ -641,6 +704,39 @@ export default class Services {
     }
   }
 
+  isChildRole(parent: any, child: any): bool {
+    try {
+      this.sdkClient.is_child_role(JSON.stringify(parent), JSON.stringify(child));
+    } catch (e) {
+      console.error(e);
+      return false;
+    }
+
+    return true;
+  }
+
+  rolesContainsUs(roles: any): bool {
+    try {
+      this.sdkClient.roles_contains_us(JSON.stringify(roles));
+    } catch (e) {
+      console.error(e);
+      return false;
+    }
+
+    return true;
+  }
+
+  rolesContainsMember(roles: any, member: string[]): bool {
+    try {
+      this.sdkClient.roles_contains_member(JSON.stringify(roles), member);
+    } catch (e) {
+      console.error(e);
+      return false;
+    }
+
+    return true;
+  }
+
   async dumpWallet() {
     const wallet = await this.sdkClient.dump_wallet();
     console.log('🚀 ~ Services ~ dumpWallet ~ wallet:', wallet);
@@ -742,6 +838,27 @@ export default class Services {
     return processes;
   }
 
+  public async getChildrenOfProcess(processId: string): Promise<Process[]> {
+    const processes = await this.getProcesses();
+
+    const res = [];
+    for (const [hash, process] of Object.entries(processes)) {
+      const firstState = process.states[0];
+      const pcdCommitment = firstState['pcd_commitment'];
+      try {
+        const parentIdHash = pcdCommitment['parent_id'];
+        const diff = await this.getDiffByValue(parentIdHash);
+        if (diff['new_value'] === processId) {
+          res.push(process);
+        }
+      } catch (e) {
+        continue;
+      }
+    }
+
+    return res;
+  }
+
   public async restoreProcessesFromBackUp(processes: Record<string, Process>) {
     const db = await Database.getInstance();
     for (const [commitedIn, process] of Object.entries(processes)) {