Triple Display Solution for LattePanda 3 Delta 864?

I'm planning to use these to drive some digital display software for restaurants, so I'd like to know if its possible to run 3 displays off of one. The wording on the store pages suggest that it can run dual 4K along with some other things?? I could get away with running 2K or 1080p on the third display but I'd like to know what the actual limits are. 

If you have any better suggestions on the hardware I should be using for this type of use please let me know! I want the hardware to be relatively cheap while staying small and fast for installation in restaurants, and if I can get 3 displays out of one device that'd be great.