For information on creating a group, please see the ArcGIS Online documentation.
From your ArcGIS Marketplace Console (https://marketplace.arcgis.com/console.html), select My Apps & Data.
From the Nearmap listing, click View Item.
- You will be prompted with a dialog box asking that you share this item within a group. Check the group you want to share with, and click OK.
You should then be directed to the Nearmap item page. Click the Open in Map Viewer and confirm that Nearmap imagery is loaded correctly.