The first time PRS is installed on a computer, a dialog will display giving the user the option to install PRS to the local directory, which makes the user's data unavailable to other users on that computer, to install PRS on a thumb or network drive, or to Share Preferences with other Users. If the last option is chosen, this checkbox will be checked. If the checkbox is unchecked, the next time PRS is started on this computer, the installation options dialog will display again, allowing the user to change the installation site option.