I am wondering if it is possible to restrict acces to certain parts of
a spreadsheet depending on the user. Here is my scenario:

We will be 3 users working on the same spreadsheet. User 'a' only
need to be able to write in columns A-E but read the whole
spreadsheet.
User 'b' needs to be able to write in all columns
User 'c' needs to be able to write only in column H and read the whole
spreadsheet.

Is there any possible way to do this with excel through a system of
different passwords OR userID recognition or any other way . ..