Combining book Titles > Likes and Comments

Hello, my book Tower of Ash and Darkness has two book titles. I am just wanting to combine them

Click on 'combine editions' just above the list of books

I do not know where to find that. can you point me in the right direction because I can't see it on my page

Just above the list of your published books to the right of 'C.L. SHIVERS’S BOOKS'
https://www.goodreads.com/author/show...