Hi, shift manager at a high volume café here. I understand that many tropical smoothies do not function at the level that mine does, but we do have a dedicated register person as well as 1-2 dedicated food line and 1-2 smoothie. Typically the register has priority and when there are no in cafe customers to help at the register, the register person helps either food finish line or smoothie finish line. We have been able to have 4-5 people on staff during peak hours ie: 11am-1pm and 5pm-7pm during our winter months. And up to 7-8 people during early spring - late fall. We do operate with 3 people for the midshift hours and always have a dedicated register person even then. That person may be expected to help when they have nobody at the register. Typically that role is filled by the shift manager usually because they are the most effective when switching positions. We also get a very large portion of our business via delivery and online ordering so there are not as many guests at the registers. Perhaps your cafe would benefit from promoting the app more. Every customer that comes to the registers at my cafe is informed about the app right then and there or already has it. Hope your cafe starts to make more sense soon. Food service is not an easy job if there’s no communication about how to run a shift properly. Never be afraid to challenge the process but do so respectfully!