ChequeSystem is designed as a standalone software that implements a database lock mechanism to safeguard the integrity of the data. When ChequeSystem is running, it locks the database to prevent concurrent access.

If a second instance of ChequeSystem attempts to run on the same database (Workspace) simultaneously, a dialog will appear notifying the user about the situation. In this dialog, the user has the option to run ChequeSystem in READ-ONLY mode.

When running in READ-ONLY mode, users can only view the information stored in the database. They are unable to create or edit cheque, modify payee or other information, or adjust software settings.