Hi Ken,
Thanks for posting in the Community!
This is a complex concern and requires assistance from your accountant. Since we are unable to provide an accounting advice, it is best to consult your accountant for this to be able to get correct information on how to record trust beneficiaries' amount to avoid messing up your books.
Check this link to locate an accountant in your area: Find an accountant.
Post again in the Community if you have other QuickBooks Online concerns.