**What**
- GET /admin/customer-groups/:id/customers
- POST /admin/customer-groups/:id/customers/batch
- POST /admin/customer-groups/:id/customers/remove
Workflows
**What**
```
POST /admin/customer-groups
POST /admin/customer-groups/:id
GET /admin/customer-groups/:id
DELETE /admin/customer-groups/:id
```
- Workflows