A billing group is a group of channels (that belong to a reseller or distributor) formed for the purpose of billing. Cloud service providers usually sell their cloud services through resellers. A reseller could own more than one channel and the service provider has to bill the reseller/distributor for the aggregated usage. The cumulative usage of all products across all channels belonging to a billing category helps the service provider to bill the reseller/distributor for the actual product consumption. To facilitate this, you have to create billing group of all channels belonging to a reseller. You can assign a channel to a billing group either during channel creation or on editing a channel's settings. In case, the billing group does not exist, you can create a billing group either during channel creation or while editing a channel.