Dear experts,

I've a worksheet where a range A5:D100 is for some users to fill in
information. Is there a way when the cell is blank, it can be input by any
users. However, whenver an user fill in some information to some rows within
the range, the non-blank cells will be protected by a password, say "tiptoe"
after saved but other blank cells will still be unprotected and can be input
by other users. Is there a VBA code can do this? If yes, please kindly advise
the code.

Thanks in advance.