Adding drawings between other drawings on the timeline?

So when I add a drawing, the previous one automatically fills out the exposure to meet the new drawing. If I try and reduce the exposure on the first drawing, it pulls the next one earlier in the timeline. Can I get that to not happen?

Also, can I switch the settings so that the exposure doesn’t automatically fill out like that?

Preferences / Exposure Sheet / uncheck: Extend Exposure of Previous Drawing.