To set a schedule for your thermostat from your Dashboard, choose the Thermostat tile on your Dashboard, then Schedule.
You will then see the on screen prompts to set the times to Wake, Day, Evening, and Sleep.
Choose to start with Hear or Air Conditioning.
You change toggle from Heat to Cool, by choosing the appropriate icon in the upper right.
You can add or remove cool and heat points by clicking on the timeline, and following the prompts.
Once you have your set points configured, select whether you want to heat or cool your home. This will determine which configuration of set points the system will use.
You can always modify this schedule, but clicking schedule under the Thermostat tile.