How can I edit multiple expense transactions that have already been added to QBs to add the same Payee information because it was missed?

Hi there,

QuckBooks is a great program for managing your transactions. With its ease of use, you're able to seamlessly navigate the program allowing you to save time for doing what you love. I'd be glad to share more information on this. 

At this time, there isn't a way to batch edit expenses, you'd have to individually edit the payee on each expense. I know how useful this feature would be to your business and I encourage you to send feedback about this to our engineers.  You can send feedback directly to our engineers by clicking the Gear icon and looking for Feedback. New features to the program are greatly influenced by users like you. 

In case you have other questions, feel free to contact our support team using this link here. Otherwise, enjoy the rest of your week!