Ignoring/Blocking an Existing Thread

I assume you want to Ignore an existing thread, ie not see any posts on the thread. If so, go to the Thread you want to block.

Go to the top of any of the pages of the thread.

Find the tab 'Ignore Thread' towards to right hand side just above the first post on the page. Click on Ignore Thread

Click the option on the drop down menu .. usually New Posts or Thread List

HTH