You can embed a forum into your Replit website by getting your forum embed code and then inserting the embed code into your Replit website using the Code Block option in Replit.

Step 1: Get your embed code

1. Log in to your Website Toolbox account.
2. Click the Integrate link in the main menu.
3. Click the Embed link.
4. Click the Embed your forum link.
5. If a Create A Subdomain First button appears, click it to connect your forum to your website domain so that it remains embedded when accessed from the Safari browser, or click Get Embed Code to come back to this step later.
6. Click Get Embed Code and copy the embed code to your clipboard.

Step 2: Add the embed code to your website

Once you have the embed code, you can add it to your website by following the steps below.

1. Visit Replit.com
2. Log in to your Replit account.
3. Click the My Repls button in the left navigation menu bar.
4. Select the site where you want to embed the forum.
5. Click the index.html icon.
6. Scroll the page down and create a new menu for the Forum.
7. Click the Run button.
8. Click New File icon.
9. Enter Forum and select forum.html from the drop-down.
10. Paste the embed code into the text box.
11. Click the Run button.
12. View your Replit website. A Forum link will now appear in the navigation of your website. Clicking that will open a page with your forum embedded in it.

Please select Other as your Website Builder in the Single Sign On settings to set up Single Sign On between your Replit website and your forum.