Page History
...
Topbar has a brief user guide for each app - they can be found here: Topbar Apps in Detail
PAT CAT is the 'big sister' of CAT4 and the user interface is built the same way as CAT4. However there are some differences in particular in the additional modules such as:
PAT CAT PIP QI Professional Guide
To understand how practices are set up and other configuration is handled, have a look at GETTING STARTED and the pages listed there.