Yes - simply open the library, use the Open command on the file menu. Navigate to the user library of choice and open it.
Or create a new user library and populate it.
The floating panel has 3 modes, the popup menu for this is found near the bottom of the panel. One mode is a tool palette, when in that mode there is always the return button to return to the other modes.
If you purchased the Additions Pack - there are several user libraries to get you started.
Or on the View menu, create a new User Tools palette, that might be what you are looking for?
Additions Pack is found on EazyDraw Store, SKU 34015 .