If manually opened libraries do not stay in your side panel after closing the program, you need to set them to load automatically.
This is especially valuable for companies protecting proprietary simulation models. Automation Studio 7 Library Files Download
Users can also download community-developed files from forums to extend the software's default capabilities. How to Download Official Library Files If manually opened libraries do not stay in
Navigate to the (usually on the left side of the screen). Automation Studio 7 Library Files Download