Click on the three dots to reveal its  menu..

2. Select "Add to Swarm": 
In the post menu, click on the "Add to Swarm" option.

3. Confirm the Addition: 
A confirmation prompt will appear. Click "Add" to add the post to Swarm.

4. Close the Confirmation Message: 
Once the post has been successfully added, click "Close" to dismiss the confirmation message.