Funny. That's what we already did. It must be a good solution. But we had 83 available. LandFX mush have added additional categories already too. I wonder what they are.

I have a 32-84-13-83 "Injector" folder.

It looks like this has always been a folder in our detail explorer, since back to 2012 at least possibly back to 2008 based on what I can find. You might have deleted it. I think "Accessories" probably makes sense to hold "injectors" too.

Yes. We don't have an injector folder, but maybe you can rename that folder to "Accessories" and put indicators, injectors and other drip accessories as they become more apparent. What do you think? Or do you think that injectors need their own folder?I don't think that injectors need their own folder, but I trust that you have a better idea of the entire industry than I do.

Seaweed,
I would probably base this on the intent of equipment. Wouldn't the injector be a more broad application use, not just for drip? If the answer is yes, then it might make sense in a higher level "Accessory" folder, and leave drip out of it. If these are injectors specifically for drip (I can't think of what that equipment looks like), then I would venture a guess that you could safely rename as "Accessories" and put all drip accessories as needed.