In the case of periodic invoicing but you haven't crossed into the billable threshold. Let's say you get 2 hrs of support per month free, after that it costs $

In the case of periodic invoicing but you haven't crossed into the billable threshold. Let's say you get 2 hrs of support per month free, after that it costs $100. If you don't use the full 2 hrs, you'd get a $0 invoice - but there may still be detail and record of work performed (which you would want)