Upon setting cash control, the options end of the session and open a session is made available or displayed. It simply denotes that upon enabling the setting, we get to see a new stage and a button-open session in the stage. Upon starting the new session, the session will be in progress and we can set the cash in/out the window. We can also see the button-end of session and continue selling for corresponding functions. If you need to close that session, click the end of session button and you get to see the starting and closing balance of the session. Validate the session via clicking validate close and post-entry button.