Do you want to create your own calendar but play your music with the Sonos app or BluOS app? You can.
You can create a custom calendar in the web player and then select the calendar using the BluOS app or Sonos app.
You can follow these steps:
Click on "My agendas"
Click on "+New agenda"
Press the pencil to edit your calendar
Add your desired channels to the calendar
Go back to the Sonos or BluOS app
Select your own calendar