If a user has lost their iPad, you should put the iPad into Lost Mode via Jamf.

To put an iPad into Lost Mode, go to Devices > Search > Enter the Device Name (e.g. D 32881) or user's name > Select the device > Management > Enable Lost Mode. 

If the iPad is on WiFi, it will go into Lost Mode, which will lock the device and display a message on the screen. Lost Mode will also enable an administrator to get the iPad's approximate location within Jamf.

Having selected the device, click on Inventory > Security. If the iPad is on WiFi and has received the command to enter Lost Mode, there will be GPS coordinates with the device's approximate location.