first you need to make them a mod of a specific forum (they can be mods of more than one) then to move threads, the must edit a post, and where it says forum (it will say the forum it is currently in), just change it to the forum where you want to move the topic to. and the press submit post. but the key is that moderators can only move threads in forums where they have power.
thanks jox. yeah i had done that...but it still wouldn't let them move it. eventually i discovered that i had to do both that (making them a mod)....AND change a setting in the board configuration that allowed them to move threads. it's all good now.
i just wish individual posts could be moved. sometimes people tag posts onto threads where they don't belong...and it defeats the purpose to move the entire thread. i gather that function is not available on forumco?