Adding users is essential. It's not recommended for several practitioners to work under the same user account due to security reasons and regulations. 

You should add each person using the application as a user, like your receptionists, physicians, assistants, etc. Don’t forget to approve the right treatment categories for a user. To add a new user, open Menu > App-settings > Users > User Accounts.

Click the plus button in the right upper corner. Enter the person's details and a self-chosen username. Mark the appropriate user role and assign the treatment categories, locations, etc.  When all details have been assigned,  confirm by hitting the save button.