Scenario: Craig installed a new garden at Red Rock Diner, and the owners asked him to handle the watering. Craig needs to stop by twice per week to water. He may need to do some weeding intermittently. Craig only wants to invoice Red Rock Diner once for these visits at the end of the month. So far, Craig has watered the new garden twice last week. He already did one day this week and plans to stop by again this week as well. Plus, this week he is going to weed. Let's see how to do this.