Adding a Details Page to Current Page

I’m trying to add a details page with a barcode to my main page. I would like to have a modal link in a column. I was able to do this by creating a new page, but I cant figure out why I cant on my other one?

It’s a table and when I try to “Add View > Details >” Im asked to select “Which records will this details display?”, but my only choice is not the records I want to display.

In my screenshot, Dashboard is the page I want to add a Details View to.

All good, I figured this out