So, I have a guy mowing the lawn. The cut grass is revealed as the mower passes through the use of masks. Now I want to add a few seconds before the mower starts mowing. I can select all the relevant keyframes and just slide them down to the right, but not the masks. I'm sure I'm thinking about this wrong, but I want very much to do them all at once and not have to reposition them individually afterwards. There are five masks total.
Never mind--I needed to expand my mask transforms so the relevant keyframes were visible. Unfortunately, now that I've moved it, the time remapped/looped mower walk cycle is doing funny things, but that's another story!