Service plan precedence determines which service plan to use when more than one service plan is applied to a device. For example, you apply Service Plan A to an entire site, and then you apply Service Plan B to a group of devices at the site. In some cases, devices are added to both service plans, if they meet the automatic inclusion rules for policies in both plans. When you set precedence, you indicate which service plan to apply.
In Service Center, click Service Delivery > Service Plans.
Click Manage Precedence.
In the Manage Service Plan Precedence pop-up window, drag and drop the service plans to reorder them.
Click OK.