Protect/Unprotect VBA Script

Hi,

I am new to Excel and wanting to know how i can update the below attached document to allow the form to enter informtaion but not allow editing in the LostProperetyTable sheet.

I want the users to only be able to use the form to edit the table not by using the table itself.

I have tried many varieties of coding to protect and unprotect the sheet but the code will not run.

Could someone please assist?

Thank you