reuse space

[mdshotgun]

hello all,

Hope someone can help me finish off this project.I am trying to get the 2 final buttons working.I can use the unit buttons ok.now the reuse button and unavailable button are the last pieces.i was hoping for the unavailable button to load any red cells on sheet2 into sheet1 starting at b5.then pick one from list and press reuse to make it available again within unit buttons.Cause i need to be able to use and then reuse the spaces in warehouse.
unit buttons load any available cells.please see attached to see how it works.Thank you.