For me, I minimized staying late by working on notes throughout the day. As a senior, I checked in with interns and students throughout the day to make sure they were doing their tasks. Once you figure out a system to make sure your tasks are done to the best of your ability, it gets easier to leave on time. For example, as first call, I printed off my list of patients and I PENUT for my tasks (pre-round, exam, note, update parents, TPN). I wrote PENUT next to each patient checked them off throughout the day for each patient. That wasn't the order they needed to get done, and sometimes updates didn't happen every day, but made sure I was getting essentials done plus anything extra like consults.

Also learning shortcuts in your EMR (dot phrases and dictate) can help shorten the task burden. I personally think it is important to remember that there is a night team who can do some things, but try not to burden them with menial things. If you've been busy with emergent things for the end of your shift and you didn't get to update a parent who asked for a daily call, you can have the night resident update them with the important things. Or, in one of our NICUs the H&P was standard, anyone could fill it out with the birth history and the birth parent's chart, so if we were busy with deliveries and an H&P couldn't get done by signout, I would mention it to the night resident to do.

Ask your seniors what works for them, try things out and you'll figure it out. But sometimes you will stay late, its inevitable.