I've found out how to attach a leader from a Datum frame to a Feature Control Frame, but is there a way to attach it directly without a leader? Currently I zoom in as close as possible to connect them manually but when I move one, change something or anything it loses the other box.

I've looked through piles of threads but haven't found this. Please advise.

/edit/ I've tried creating Blocks but the Frames cannot be selected to be part of a Block.