Pro Series Basic questions for Link (I love Link!)

1. I know how to uninvite a client, but I do not know how to make them "disappear" from the client list. I read that I can "deactivate" the client and that will make them "disappear" but I cannot figure out how to deactivate.

My real question is: In Pro Series Basic what are the steps to have a client removed from appearing the client list.

2. How do I sort clients in Pro Series Basic Link?  I have read it is by "last activity" but that does not appear to be the case for me.  Is there a way to sort clients alphabetically?

Thanks!