How do I set up a sub account under an equipment category
In QuickBooks Online, you can create subaccounts to break down your expenses, income, and more into greater detail. For example, you can divide your utilities account into subaccounts, so you can track different types of utility payments, like gas, telephone, water, and so on.
You can create subaccounts of any main (or “parent”) account. I'll be happy to show you how to do this on your end.