diff --git a/README.md b/README.md
index f37e511..39c3948 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,30 @@ Then edit `appsettings.json` and fill in your actual values:
 | `GitHubApp.TeamName` | Team slug used for review workflow (for example: `captains`). Review labels are updated only when review is submitted by a member of this team. |
 | `Kestrel.Endpoints.Http.Url` | The address and port the server listens on (default: `http://0.0.0.0:3456`) |
 
-### 2. Run
+### 2. Configure GitHub App permissions and webhook events
+
+Your GitHub App must be configured with the following permissions:
+
+**Organization permissions**
+
+- Members: **Read-only**
+
+**Repository permissions**
+
+- Pull requests: **Read and write**
+- Issues: **Read and write**
+- Contents: **Read-only**
+
+Your GitHub App must also subscribe to these webhook events:
+
+- Issue comments
+- Issues
+- Pull request review comments
+- Pull request review threads
+- Pull request reviews
+- Pull requests
+
+### 3. Run
 
 #### Option A: Run directly
 
@@ -72,7 +95,7 @@ docker run -d \
   ghcr.io/openruyi/abaci-bot:latest
 ```
 
-### 3. Build Docker Image Locally (Optional)
+### 4. Build Docker Image Locally (Optional)
 
 If you want to build the image yourself:
 
diff --git a/Services/GitHubService.cs b/Services/GitHubService.cs
index 5cdfdb6..90bbcad 100644
--- a/Services/GitHubService.cs
+++ b/Services/GitHubService.cs
@@ -139,4 +139,11 @@ public async Task<HashSet<string>> GetTeamMembersAsync(
         var members = await _client.Organization.Team.GetAllMembers(teamSlug.Id);
         return members.Select(m => m.Login.ToLowerInvariant()).ToHashSet();
     }
+
+    // Add more GitHub API methods as needed.
+    public async Task<PullRequest> GetPullRequestAsync(string owner, string repo, int prNumber)
+    {
+        await EnsureAuthenticatedAsync();
+        return await _client.PullRequest.Get(owner, repo, prNumber);
+    }
 }
diff --git a/Services/GitHubWebhookProcessor.cs b/Services/GitHubWebhookProcessor.cs
index 4a5959a..370ffad 100644
--- a/Services/GitHubWebhookProcessor.cs
+++ b/Services/GitHubWebhookProcessor.cs
@@ -2,6 +2,7 @@
 using Octokit.Webhooks.Events;
 using Octokit.Webhooks.Events.PullRequest;
 using Octokit.Webhooks.Events.PullRequestReview;
+using Octokit.Webhooks.Events.IssueComment;
 
 namespace abaci_bot.Services;
 
@@ -27,6 +28,8 @@ protected override async ValueTask ProcessPullRequestWebhookAsync(
         var repo = pullRequestEvent.Repository.Name;
         var headSha = pullRequestEvent.PullRequest.Head.Sha;
         var isDraft = pullRequestEvent.PullRequest.Draft;
+        var currentLabels = pullRequestEvent.PullRequest.Labels.Select(l => l.Name).ToList();
+        string prTitle = pullRequestEvent.PullRequest.Title;
 
         // Handle PR when opened or synchronized (new commit)
         if (action == PullRequestAction.Opened || 
@@ -51,7 +54,7 @@ protected override async ValueTask ProcessPullRequestWebhookAsync(
             // Then, let's analyze the content of the PR and add labels accordingly.
             await AnalyzeFilesAndLabelPR(owner, repo, prNumber, headSha);
 
-            if (isDraft)
+            if (isDraft || prTitle.StartsWith("WIP", StringComparison.OrdinalIgnoreCase))
             {
                 // For draft PR, add "Workflow: In Dev" label to indicate it's still in development,
                 // and remove "Workflow: Ready For Review" label if exists.
@@ -62,7 +65,10 @@ protected override async ValueTask ProcessPullRequestWebhookAsync(
             {
                 // For non-draft PR, add "Workflow: Ready For Review" label and remove "Workflow: In Dev" label if exists.
                 await _github.RemoveLabelAsync(owner, repo, prNumber, "Workflow: In Dev");
-                await _github.AddLabelsAsync(owner, repo, prNumber, "Workflow: Ready For Review");
+                if (!currentLabels.Contains("Workflow: In Review"))
+                {
+                    await _github.AddLabelsAsync(owner, repo, prNumber, "Workflow: Ready For Review");
+                }
                 
             }
         }
@@ -103,6 +109,38 @@ protected override async ValueTask ProcessPullRequestReviewWebhookAsync(
         }
     }
 
+    // When a new comment is created on the PR, if the commenter is a captain, we can also add "Workflow: In Review" label.
+    protected override async ValueTask ProcessIssueCommentWebhookAsync(
+        WebhookHeaders headers,
+        IssueCommentEvent issueCommentEvent,
+        IssueCommentAction action,
+        CancellationToken cancellationToken = default)
+    {
+        if (action == IssueCommentAction.Created)
+        {
+            if (issueCommentEvent.Issue.PullRequest != null)
+            {
+                var prNumber = (int)issueCommentEvent.Issue.Number;
+                var owner = issueCommentEvent.Repository.Owner.Login;
+                var repo = issueCommentEvent.Repository.Name;
+                var captains = await _github.GetTeamMembersAsync(owner, _config["GitHubApp:TeamName"]!);
+                string sender = issueCommentEvent.Sender.Login.ToLowerInvariant();
+                var pullRequest = await _github.GetPullRequestAsync(owner, repo, prNumber);
+                var prTitle = issueCommentEvent.Issue.Title;
+
+                // Only when the commenter is a captain, the PR is not in draft,
+                // and the title doesn't start with "WIP", we consider it as "In Review" and add the label.
+                if (captains.Contains(sender) &&
+                    !pullRequest.Draft &&
+                    !prTitle.StartsWith("WIP", StringComparison.OrdinalIgnoreCase))
+                {
+                    await _github.RemoveLabelAsync(owner, repo, prNumber, "Workflow: Ready For Review");
+                    await _github.AddLabelsAsync(owner, repo, prNumber, "Workflow: In Review");
+                }
+            }
+        }
+    }
+
     private async Task AnalyzeUserAndLabelPR(string owner, string repo, int prNumber, string? userEmail)
     {
         var domain = ExtractEmailDomain(userEmail);
@@ -173,9 +211,11 @@ private async Task AnalyzeFilesAndLabelPR(string owner, string repo, int prNumbe
                 }
             }
 
-            // TODO: What if, LTS.
-            labelsToAdd.Add("Target: Rolling");
-            
+            if (file.FileName.StartsWith("SPECS/"))
+            {
+                // TODO: What if, LTS.
+                labelsToAdd.Add("Target: Rolling");
+            }
         }
 
         if (labelsToAdd.Any())