How do I edit vehicle groups?

Answer:

Once you open the Remora Administrative Portal and select Vehicle Groups under the Inventory Mods tab (reread how to access vehicle groups), click on the green circle with an image of pencil it in (pictured below) to the far right of the corresponding row.

Then, you can modify the vehicle group name, description, filters, and list of vehicles selected on the Edit Vehicle Group page (previewed below).