Rhino 7 has a new packagemanager command to easily install plugins.
This works for the following plugins:
It does not work for these plugins (these should already be available, as we installed them using alternate methods under Rhino 6 or Rhino 7):
If you don't see a plugin available in Package Manager, we may already have installed it using alternate methods. Check the menus under Grasshopper. Also check Rhino 6, as it may be installed there.