Hi PhilthyCollins,
Thanks for contributing to our forum. I realize that the listings you referred to in your post must have already ended at this point but, for future reference, we do not currently have any functionality in place that would allow you to add an Auto Relist profile to a listing which is currently active.
In the event you find yourself in a such a situation again, you potentially end your items early and then repost them anew from your Saved Listings page with the desired Auto Relist profile selected OR just let them close naturally and repost them manually when you have a chance.
I hope this helps. If you need any further assistance with your account, please feel free to contact our Customer Support team by mousing over the “Help” tab and selecting the “File Support Case” option.
-Mike