Within the header image, there is the facility to add in a clickable link, for example for a headline sponsor. To do so:
Login in to your Club Control Panel.
Click Settings on the right.
The Homepage Design page should appear.
Locate where the header image is displayed and then click Edit.
Once you have added your custom header image, underneath, you can enter the URL for the clickable link.
You can then direct where the link will be in the header image via a drag and drop facility & also re-size the area to fit what you need.