How to attach an expense account to a vendor?

I am setting up Quickbooks Online - migrated from desktop this month.

I have vendors that have their own expense account in our GL. They do not have recurring bills, but whenever they send a bill, it is for the same expense. I do not see a place in vendor set up to attach a specific expense account to that vendor. I do not think I should have to enter the expense account every time I enter a bill for that vendor.

Have I missed a step in the setup?