For each management group, you can set whether the underlying items may be displayed on the homepage. These items will always be displayed under the content blocks of the homepage. When you display multiple management groups on the homepage, it is possible to change the order via SiteCMS, as follows:
You have now changed the order of the management groups. These changes will be visible on the homepage.
Tip: The visibility of the change may take a while, you can speed up this process by clearing the cache via Settings > Actions.