I didn't create any UI, i reused a constant combinator and added additional functionality to it.
The problem with creating new UI is, that i would not know how to make it replicate the in-game experience of selecting item + quantity ( + quality + planet import) in one pop-up window. (there seems to only be a lua gui element "choose-elem-button" for item+quality)
Another problem is that i have not found any way to get all the existing logistic groups, so user would have to manually select groups to edit.
Which to summarize would make for a worse experience compared to just jumping to the combinator/requester/platform or having the disabled group in the player inventory logistics section.