So I'm trying out activities for the first time. I made a couple, but I can't figure out how to rearrange them. I figured click and drag was the most natural thing, but this picks all of them up and just slides them back and forth. Is it possible to rearrange my activities?

I don't think it is possible at the moment.

Alright, I guess. I'll just try and make them in the right order the first time

You may wish to file a feature request regarding this - even if it is just for some form of ordered sorting (such as alphabetical, based upon the Activity name).