Agiliad Thanks for confirming!!
Yes I checked Manage device groups in Device Update for IoT Hub and followed the same step but not able to find the group in to Group and Deployment navigation.
Looks like you are seeing empty list in the Groups like below. Can you confirm if you have created Groups already?
Ensure that you have completed all pre-requisites without any fail.
Groups are automatically created based on the tags assigned as well as the compatibility properties of the devices.
Also, Note that to create a device group, the first step is to add a tag to the target set of devices in IoT Hub. Tags can only be successfully added to your device after it has been connected to Device Update.
Device Update tags use the following format:
"tags": {
"ADUGroup": "<CustomTagValue>"
}
Once you complete these steps, you will be able to see Groups listed under Group and Deployment tab.
Hope this helps. Do let us know if you have any further queries. We would be happy to assist you.