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Here's everything you could ever need to know about recording a vendor payment through Zelle in QuickBooks Desktop. You can select any of the payment method (check or credit card) options that are showing up upon paying your vendor. After that, you may add a Memo to the bill indicating that it was paid through Zelle.

You're bill will now look like this after adding the Memo: 

Know that being able to select Zelle as the payment method in the system isn't available. However, our developers are constantly working and considering new features to be added to the program. This way, we can cope with your business needs.

You can always visit our Firm of the Future site to be updated with our product road-maps.

I'll be around to help if there's anything else that I can assist you with. Have a good one!