I am fairly new to Google sheets and not a coder. I have been tasked with creating a shared sheet for recording receipts wherein User A enters the receipts in a Google sheet in Columns B:J and User B enters it in an accounting software and marks it as true in column K. Neither user has access to each other's fields of entry.
What I would like to do is once a cell is marked as true in column K, that particular row from B:J becomes locked for editing for User A.
Is this functionality possible in Google Sheets? I would be grateful for any help.
I have gone through the following link but not sure how to implement it: Auomatically lock/protect a range or row based on date