I don’t think there’s a great way to currently do this because all the LNURLs can have different routing fees. Also, some of the split payments could fail. LNbits has a spilt payments plug-in, but I think it works much better if you give each user a wallet on your LNbits server and split the payments to each wallet instead of forwarding to LNURLs. 

 Ooooh good idea. Gonna do this 

 This is how I was going to suggest to do it as well.