You can build detailed communications gradually or choose to pause what you're doing and return to a draft later.
Save a Draft for later
When creating a task or an announcement choose the Save draft option to save what you've done. You can do this at any stage of the task/announcement creation.
Visit the Drafts section via My Menu.
Click on a card to start where you left off last time.
Click on the menu button on the draft to reveal draft options