After creating a sector, you can associate a Device to it by clicking on the as shown in the following image:
Click in the Serial No. field to choose your Device for the Sector.
Select or modify the Start Date and click on
You can repeat this process for as many Devices as you would like to add to your Sector.
Associate up to 50 Devices to a Sector
You can mark an assacioate up to 50 devices to a sector.
After selecting the devices the list on the right will be filled with the serial numbers of the devices and are marked purple red.
Click save to associate the devices.