Enable DOPSoft software, click [File] and select [Password Protect] from the drop-down menu to set a password. Then, save and close the program. Next time when you open the program, a Password dialog box will pop up and ask you to enter the password for the program. If you enter an incorrect password, an error message dialog box will display on the screen. The password for opening the program can also be modified by clicking [Options]  [Configuration…] from the drop-down menu.