Employee advances
Under Finance → Employee advances you give an employee cash to buy something for the company, then settle it with their receipts and any cash they return.
This article is still being written: it explains what the screen is for, and its steps are not written yet.
An advance is cash an employee takes to spend for the company, such as buying supplies for the shop. You give it with Issue advance: the cash leaves the account and stays with the employee. When they come back, you settle the advance with the receipts they bring, each one recorded as an expense, and with any cash they return. The page shows what each employee still holds.
You'll find it in the sidebar under Finance → Employee advances. Owners and managers issue and settle advances, and so can anyone given a role with the permission to issue advances.