How to adjust Expenditure on my day off?

I have a high activity job Monday through Saturday, but on Sunday I rest and barely do any activity. I would like to adjust my expenditure because I know I don't need as many calories on that day. Seems like there should be an easy way to adjust just for 1 day, or a recurring day. But everything I've found is buried deep in the menus and has to be changed again the next day to fix, and likely messes up my weight goals. Any recommendations?