Do you want "someone else" to be able to save document in this folder or is
it just you saving documents in this folder? Is this folder on your local PC
or is this on a corporate-type network/server? Does this someone else have
an account on your PC or do you share one account? Check out folder and file
ownership and permissions (right-click and choose Properties and then
Security). All kinds of options there depending on the answers to the above
questions.
Tim