To set a service as a primary, add-on, or both, follow the instructions below. 

1. Click on the Edit icon in the Actions column

2. Toggle the button for primary or add-on, or both, on or off. If the service type is toggled to green, the service is enabled (for example, the Primary type in the image below.) 

If the item is toggled to red, the service type is disabled for that service, and it cannot be added to an order.

3. Click on Update

The service type has now been set for that item and will be available to add to a new order.