From Point of Sale, it is possible to sell items to staff members with the same or different prices.
Please see: Prices for Staff Members
In order to sell an item to a Staff Member, select it from the list and then click on Sell to Staff button (choose the staff member you sell the item):
The system will ask you then for the confirmation of the sale:
The sales to staff will be visible in Accounts and Transactions under category POS Sales: