Panorama Web Interface : Panorama > Device Groups

Panorama > Device Groups
Device groups comprise firewalls and virtual systems you want to manage as a group, such as the firewalls that manage a group of branch offices or individual departments in a company. Panorama treats these groups as single units when applying policies. Firewalls can belong to only one device group but, because virtual systems are distinct entities in Panorama, you can assign virtual systems within a firewall to different device groups.
You can nest device groups in a tree hierarchy of up to four levels under the Shared location to implement a layered approach for managing policies across your network of firewalls. At the bottom level, a device group can have parent, grandparent, and great-grandparent device groups at successively higher levels—collectively called ancestors—from which the bottom-level device group inherits policies and objects. At the top level, a device group can have child, grandchild, and great-grandchild device groups—collectively called descendants. When you select Panorama > Device Groups, the Name column displays this device group hierarchy.
After adding, editing, or deleting a device group, perform a Panorama commit and device group commit (see Panorama Commit Operations). Panorama then pushes the configuration changes to the firewalls that are assigned to the device group; Panorama supports up to 1,024 device groups.
To configure a device group, Add one and configure the settings as described in the following table.
Select each firewall that you want to add to the device group. If the list of firewalls is long, you can filter by Device State, Platforms, Templates, or Tags. The Filters section displays (in parentheses) the number of managed firewalls for each of these categories.
Fastpath: 
To configure policy rules and reports based on usernames and user groups, you must select a Master Device. This is the firewall from which Panorama receives usernames, user group names, and username-to-group mapping information.
Note: 
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When you change the Master Device or set it to None, Panorama loses all the user and group information received from that firewall.
This option displays only if you select a Master Device. The option enables Panorama to locally store usernames, user group names, and username-to-group mapping information that it receives from the Master Device. To enable local storage, you must also select Panorama > Setup > Management, edit the Panorama Settings, and Enable reporting and filtering on groups.
Panorama Web Interface