What I did: I have two different calenders and 4 reminders setup on my MacBook.
What happened: When I try to schedule from Agenda the dropdown did not give me any options for different calender or reminder. Agenda schedule it in the default calender same goes with the reminder.
What I expected: I should be able to select different calender or reminder from Agenda.
Things that might be helpful to know (Agenda version, OS and model, etc):
I am using a macOS calendar. I have two calendars configured on my Agenda app. When I try to schedule, Agenda does not give me the drop-down options to select my calendar. This issue is the same for Reminder.