If you have access to Lookup Editor in Back-office, you will be able to add a new salesperson or rep that can be seen in all "Salesperson" drop-down lists AND in the Point of Sale:
STEPS:
1. In Advantage Back-office, click the left sidebar menu.
2. Open the System menu.
3. Click on Lookup Editor
4. Click on the Filter button in the navigation bar:
5. Type "rep" into the search field:
6. Press "Enter" on your keyboard.
7. Select Reps.
8. If Salesperson 1-5 are all used, then click on the insert button at the bottom of the screen:
This will add another blank field to the list of reps:
9. Type the salesperson / rep's name in the Description field.
10. Select an option from the Commission drop-down field.
11. Select the Enabled option from the Active drop-down field.
12. Press "Tab" on your keyboard.
13. Click on the Save button in the navigation bar:
NOTE: For the change to take effect, close the Point of Sale application on ALL the computers, and log back in.