Click Website at the top and go to Manage

Click Add-Ons in the upper right and select Executives

Click the 'Add Executive' button in the upper right

Enter in their information and press 'Add Executive'

Click the Website tab at the top and go to Builder

Hover over Add-ons at the top and select Executives

Under the Add / Edit tab click the Add button

After saving your new executive(s) click the dropdown arrow beside the Add Content button in any of your content blocks

Select Executives from the Add-ons list