To add a Data Layer to a campaign click on Add Data Layer (On the sidebar segment in Map view)
Next chose the desired demographic from the available dropdowns (modal will automatically close once selected)
The Data Layer can be removed or exported by click on the Actions button.
The Data Layer heat map will only appear in areas near where you have units
You can toggle on or off the heat map
You can adjust to match percentage or total population
Export will include a demographic breakdown by zip code