Panels are accessible in the Desktop through a 2 levels menu bar in the page header.
The first level is the panel group (also called category), the second level is the panel.
A new panel group can be defined in application.xml with the rootgroup and domaingroup components, e.g.:
<domaingroup name="examples” catalog="example-basic-app::misc" />
A catalog must be specified for the menu label string (the catalog key is the group name, “examples” in the code snippet).
Each panel must point to an existing panel group.