A way to let the customer to pay for a working time and then record the usage

[alaali]

Hi,

 

We are giving some of our customers a contract where we are giving them an amount of hours per month. each month an invoice should be generated with the same amount. We need to record the usage of those hours so the customer know how many hours are remaning for him.

 

Is there a way to do that using WHMCS or do I have to code an addon for this feature?

 

This can help the companies which provide maintenance contracts with a certain amount of hours per period. After finishing that amount the customer should pay an extra amount for each additional hour.

 

Thanks

[alaali]

If some people are interested we will build it and we can share the cost?