How do I use a key for two different things?

I want to let players place furniture and once shift is pressed they can't move it again, but how do I reset the shift for each different furniture item?

Create instance variable set it as boolean. Let's name it "placed". In placing object condition where you put shift key pressed add boolean "placed" condition is false, then set the boolean "placed" to true in action as locking state for that furniture. So if a furniture has true boolean condition it won't able to move.

Thank you