how do i set up a reading plan for the Old Testament except for the psalms?
Without getting into custom reading plans (which are slow to create but usually work), here's two quick fixes-
(1) Make an OT reading plan. When you get to the Psalms readings, mark them complete.
(2) Make two reading plans, one for Genesis - Job, and the second for Proverbs - Malachi. Have the second start the day after the first ends.
You can make your own custom plan using that tool. You'll have to do some research on how to use the tool though, since Logos doesn't publish any kind of manual.
From https://wiki.logos.com/Reading_Plans#OT_.7c_NT_.7c_Psalms_.7c_Proverbs we get
Ge–Job, Ec–Mal | Mt–Re | Ps | Pr
So for what you want try "Ge-Job, Pr-Mal"
Doc B: thanks for your prompt and helpful reply.