Very good to see there are a couple of options to filter lists/schedules.
The ‘By Layer’ works nicely but I can’t get the ‘By Region’ option to work.
Rhinolands documentation suggests there should be tools to create & edit a Region if the ‘By Region’ option is selected - Add Boundary, Add Hole, Clear
These options appear in the context menu when you have a List object selected.
The context menu is shown at the top-right area of the Lands Edit Panel:
Since it looks like you are using the old-fashioned _laEdit command to edit the objects, which show a modal dialog, this menu doesn’t appear. If you don’t like to have the edit panel opened all the time and you prefer to use the _laEdit command instead, you can still access the context menu by right-clicking on the viewport and holding pressed the right button some tenths of second until the cursor show a menu icon (otherwise the last command will be called):