With PM open click the admin tab on the top of the window and follow this path – Prefrences>User>Scheduling and click Scheduling.
Select the Multi View tab and check all the users you want to add to your AppBook. If you use a specific Multi View group like CHR, Dental, Medical, then make sure to select that in the drop down column.
Select the Resources tab and check all of the Resources you selected in the Multi View tab.
To change your AppBook to show your custom Multi-View group, select the "Change Multi-View Group" at the top of AppBook.
Additionally, you can go to the general tab in preferences and change your start appt book to Multi-View