Starting with a model containing a building, go to the Zone Grouping workspace
Create a new Zone Group and add the desired thermal zones
The Zone Loads dropdown menu will allow you to select a Zone Loads template to apply to the selected Zone Group, and the zones it contains
Zone Loads templates can be edited directly in this workspace by clicking "Edit Template Values" above the dropdown menu, or by going to the Templates tab in Simergy and selecting the Zone Loads button in the ribbon menu