If you want users to have limited accessibility to your clinic's account based on the role you have chosen for them, you can enable the security option from your Smart Flow web account.  

In order to do so, you need to click on the top right icon of the main screen> choose Settings from the drop-down menu. Then, you need to click on the Security tab on the left side of the screen, and set the YES/NO toggle for the Enable Security option to YES:

From now on, all users will have limited access to the main clinic account while signed in using their own username and password.