Multiple Users Locking Cells

Hi, welcome to the forum
I think a short answer will help you the out of your dilemma , you cannot protect only a cell or cells and even less protect individual rows with different passwords.
The Locked cells are locked when the worksheet is protected and only one password locks it and the same one unlocks it.
You will have to write quite an extended macro that maybe also includes a userform for the selected empty cells to be populated and once populated locked. This macro should then also include some verification routines that would permit the user that locked it to edit it (based on his/her initials)
But if a different user may edit the same row if a cell is empty then you'll have to go deeper.

In short, you'll have to work out a programming routine that takes care of everything, this is not just a simple help issue, if it's that important then maybe apply for a paid solution on this forum