In order to be able to top up a balance to a customer, we will first go to his tab and go to the "Billing and Collection" section and the "Balance" tab.
From here apart from reloading, we can also make a balance correction, see all movements etc.
Once inside the "Balance" section, we will click on the "Top Up Balance" button, to proceed to top up.
From the Top Up Balance window, we can choose a default top-up or a custom one, click on top-up and we can check that the customer already has a balance in the wallet.
In order to customize the reloads you have to go to the menu:
Customers-->General Rates-->Top-ups/balance charges-->New
*In it you can customize the types of recharge*