put a placeholder on something
to reserve a spot or time for something that is not yet finalized · to make a provisional booking or entry
What's the situation?
This expression is super handy when you want to block out time, space, or even a budget item for something that isn't 100% confirmed yet. Think of it as putting a sticky note on your calendar for a meeting that might happen, or reserving a small budget for a potential project. It keeps things open without fully committing!