Sequencer: Jump ahead by a specific amount

I could be imagining it, but I thought there was a way to type something like +12 to jump ahead 12 frames. I can do the math, but it would be nice to not worry about it. Is there a feature when I can type “+” and the number of frames I want to move the current frame bar to?

I don’t think this is possible by default yet. However, you can try using Agora Studio Tools for this – Agora Studio Animation Tools | Fab

Take a look at Jump Frame Increment which determines the number of frames to jump forwards/backwards when pressing Shift + Left/Right Arrows.