Task targets: hive, apiary, queen

A task can have several targets at once: particular hives, a whole apiary, or a queen. A task targeting an apiary automatically covers all of its hives.

A task is closed off target by target. When you mark it done, the app shows the list of targets and asks you to tick the hives the task is finished for. Treated twenty hives out of thirty — tick twenty, and the task stays open on the remaining ten instead of getting lost.