Head to app.stridepost.com and log in and you'll be directed to your Family Dashboard. Once you're in your Family Dashboard, you can view your Family Calendar, To-Do Tracker, and Rewards all on one page.
On each of the Events, To-Dos, and Rewards tabs, there are buttons to add an event, to-do, or reward respectively. Click to add items and fill in the information you need! For more specific instructions, see these FAQs:
How do I add a calendar event?
How do I add a to-do?
How do I add a reward?