Create a loyalty program and add offers to it so that members can earn cash back.
Olive API
To create a loyalty program, call the Create Loyalty Program (POST /loyalty_programs) endpoint.
When creating a loyalty program, set the isDefault parameter to TRUE so that all members are automatically added to the loyalty program upon signup.
Olive Customer Portal
Alternatively, you can create your loyalty program and add offers via the Customer Portal.
See Loyalty for more details on how to do this, as well as how to leverage Offer Inclusion Rules to streamline the process of adding offers to your program.