Hi Dr. Sassi,
Thanks for your reply.
The drop down box would only let me select Site Issues for some reason. I tried again this morning and it's still the same. The Question and Answers section is not appearing as an option. I'm using google chrome.
Could you please point me in the right direction of how to do this in Xpresso? I can't seem to find any documentation online. I found another old forum post from 2011 where someone was trying to lock vertices by using a python tag linking to a point selection tag but it didn't work for me.
Thanks again!