When your client will first access the reseller panel he will have to tweak the configuration as he wants. We recommend first to access Settings -> Configuration and change them accordingly.
After that he will need to create a new OpenStack Plan. In that OpenStack plan he will be able to define pricing rules based on the resource type he wants.
The next step would be to access the cloud menu and configure the Flavors and the Images. The reseller will have some default flavors that can be displayed to the reseller’s clients, or he can create new ones.