When you enter a new task in Studyo, it will set the announcement and due date automatically for you:
If you enter a task today; its due date is on the same date; or
if you enter a task on a future date, it’s announcement will be set to today.
You can change this to your liking through the Gear menu under Preferences..
Gear > Preferences > Due next class
This option makes it so that when you enter a task on the current day, the due date is automatically set to the next class. You can still modify it, only it’s initial value is adjusted.
Gear > Preferences > Announced Today
When active, entering a task in the future will set it’s announcement to today. Otherwise it would be set on the same date it is due. This is mostly for teachers.