Log on to your TherapyPM portal using this link https://app.therapypms.com/. 

Go to Appointment > Calendar View/Timeline View. 

Select the appointment in which you want to add a break. 

Once the Edit Appointment appears, click on the Actions button. 

Under the dropdown, select Add Session Break. 

Add the details of the replacement provider - name, start & end time. 

You can also use the “+” sign to add more than one session break. Then, click the Save button.