Practice for the Logic unit on a gym's class schedule. Each task asks for a label or a number that depends on a rule. Decide whether it needs IF, IFS, AND, OR, NOT or IFERROR, write the formula in G2, and fill it down to G9 where the task says so.
Two reminders: put the strictest test first in IFS and nested IFs, and give IFS a final TRUE pair so nothing falls through to #N/A.