The "Home Set Point" is reflected in the "Control Bar" at the top of the app screen (see picture below).
Homes with an integrated smart thermostat that have the Set Point Controller option set to "Thermostat" will not see this "Home Set Point" icon. The "Home Set Point" will be inherited from the smart thermostat.
This "Home Set Point" is applied to any Active rooms that do not currently have a scheduled set point or a hold in place, those take priority.
You can adjust the home set point by tapping the thermometer icon in the Control Bar and dragging the slider to the desired temperature. This becomes the home set point for your Flair home and will be applied to rooms as noted above.
It's important to note that all gaps in a Flair schedule will inherit this home set point.