If you need to create additional document types apart from those already existing in PracticeSuite, you can do so in two ways.
Method 1: Through The Document Manager
Method 2: Through EHR Lookups (for Admin Users)
Go to EHR Advanced> EHR Admin >EHR Lookups.
Click on the top-right corner of the EHR Lookups. Provide the necessary details in the Add/Edit Lookup that pops up, and click on Save.