I have a fabrics website, and I've developed it with many products. Now, I want to add a stitching optional page to all the product pages. In other words, I want a page where customers can enter measurements for their fabric to be stitched in. I don't know how to do that. This page has to be between the product page and checkout. More importantly, it is optional so it has to be something like a radio button on the product page which upon checking leads to this particular page.
Can anyone tell me how this can be done? On one of my competitor's website, an in-page popup is installed activated by a radio button. In another one, selecting it leads to a different page altogether.
I hope you understand what I'm saying here. I'm not aware of the technical terms. I'm a novice. I posted this problem on stackexchange and they put my thread on hold saying the answers to this question can be vast, simplify the question. I don't know any other way to put it. Please help.
