@Kallang22 Agenda3 does not have milestone, but deadlines can to some extent replace it. A deadline indicates the task's due date.
If a task has a deadline, the calendar will display the number of days remaining until the deadline.
@Kallang22@buymeacoffee No fee is required. "Deadline" actually represents the task's deadline, and in Agenda2 it is considered equivalent to "schedule". I haven't figured out how to use it in Agenda3 yet. May I ask in what scenarios you would choose to use "deadline"?