To add an Agents contact details and headshot image to your tour overlay, click Contacts on the left-side menu:
After clicking Contacts, click the Create button in the top-right corner of the screen:
Fill in all the relevant fields, and upload a headshot of the Agent if necessary and then click Create
Agents can then be added into a tour by navigating to the Property Page you would like them to be showcased on, and clicking the Overlay button within the right-hand side of the Virtual Tour tab:
Then click Edit under the Branding and Layout module and select the appropriate contact from the Contacts drop-down menu, then click Save. Your Agent details will then be shown in the side-menu in your Virtual Tour.