I want to create a Google Sheet, where multiple users can insert the name of the company asset they are checking out for the night on one column and get approval from their manager on another column. I would like to restrict access so that the last entry is at 7PM every day, so essentially, lock that day's data. The following day, staff can add new rows with new data but cannot edit / add anything in the previous day's data. Is there a way to make this function of locking and unlocking the document automatic? 
How to make Google Spreadsheet editable only at specific times
google spreadsheets;google apps script