First of all, we need the Product Code / SID.
Once we've got that we need to go to Main Menu > Customer Order Setup > Catalogue File Maintenance > Catalogue Codes and Search using the product code.
Click Edit
and on the right click on Maintain
Player Pages And Rankings
Click on Add Web Page and select the player from the dropdown. Tick all kits and put in the ranking depending on where on the listing page you'd like the product to display.
Click on Update and then on Previous Screen on the top right.
Now click on Maintain Stars Shirt on the right.
Click on the Radio Button against the player
You should then be able to see this player under Current Stars and the listings page against the player.
The last step is to link the products Link/URL from Maintain Web Description: