Time Validation

Hi All!

Realized I posted in the wrong place, lol. I have been struggling with this for the past three days--I need vba code that will check the clock ins I have created/will create against each employee's listed availability. I also want to be able to copy this whole section over to the next columns over for new "sets of employees". Let me know if I can provide additional information! Thank you!

Ideally, I want to click a button, and it will highlight out of range cells in the whole sheet.