Is there a way to split money from tickets between two GLs?

We are hosting an event in November that we would like to ticket through Tessitura. Part of the ticket price will be standard ticket revenue and part will be a donation that will be passed on to the restoration of Notre Dame cathedral in Paris (so the donation portion won't be a donation to us). I know we would need to set up a new fund for the donation portion, but is there a way to have the system automatically split the money? Or does our finance office have to do it after the fact? I'd prefer not to use an elevated event because I'd like the ticket portion counted as revenue (not a donation), we don't have an invited guest list for this one, and I'd like people to be able to register on TNEW. Any ideas or advice would be greatly appreciated! Thanks!