Yes, credit distribution module is included in Reseller, Developer and Enterprise edition.
You can also allow reseller accounts and normal accounts under the resellers who can further resell credits!
NOTE: Marketer edition doesn’t includes credit distribution feature.
You can provide credits to your customer so the customers can use these credits to send messages on their own. And you can charge them at any price per message sent.
Your clients can automatically download delivery reports, active & non active WhatsApp numbers. And also see the status of their campaigns directly within the dashboard.
You can also set the option to approve/disapprove campaigns every time a new campaign is uploaded by any customer or reseller. And give reseller the rights to approve campaign before its shared for admin approval.