Accounts specify account names and (usually) passwords for a file. When a user opens a file that contains accounts, a dialog box usually prompts the user to enter account information. When a user opens a file with a correct account name and password, the
privilege set assigned to that account determines what the user can do in that file. See
About accounts, privilege sets, and extended privileges.
You can create and modify accounts in a shared file while clients are using it. The account changes you make take effect immediately. However, the changes do not disrupt any current clients. For example, if you change the password for an account that is in use by one or more clients, their FileMaker Pro usage is not interrupted. However, they will need to enter the new password the next time they open the file.