In the left hand side of the images you can see that the ‘Products’ page consists of 2 parts.
Showing a list of all created channel groups.
Showing a list, with descriptions of each product with its correlating reference.
In Channel groups, you can click the ‘+ Add Channel Group’ button in the top right corner to create a new group (1). When created it will get displayed in the list below for further editing (2).
To edit a channel group, press the name of a group on the list (1).
You can now view all Channels connected to this group (1). To add additional Channels to your group press the ‘+ Link channels’ in the top right corner (2).
In ‘Link channels’ you can select the channels you want to link to the group (1), and scroll to the bottom and press the ‘Save’ button (2).