I have some lower third templates I made, that consist of three simultaneous elements on three tracks. I have a couple different ones - is there a "bin" or storage place I can keep these grouped elements? I just kind of move them around on the timeline which is getting clumsy.

I'm on Movie Studio 10

As a group, no. You might render the lower-third out to a format with alpha channel and then just import that rendered video.

Thanks, Ed.