By enabling the 'Save Card Details' permission, you can decide whether to store the customer's card information when processing a top-up, purchasing data, or changing their plan.

To enable or disable this permission, follow these steps:

1. Go to User Settings(PC480).
2. Check for your existing group.
3. Locate your group and select Manage Permissions.
4. Search for Save Card Details(PC777) under CSR Permissions.
5. Enable or disable the permission based on your preference.
6. Submit.
7. Log out and log back in to see the changes.