New Module - New Page "Columns"

I ve installed bx module Video.

How I am able to customize the site video. (a second column)? /m/videos/albums/my/main?

admin panel, builders, select page, videos home , ...there are also other pages that involve video check it out but you can create a new column

I don't find the correct page to add a column... I tried all page with something like "video" :-(

The same problem with the new module sounds...

admin panel, select videos home from the drop down down menu ... in that window to the far right you should see two buttons ... add column and add page . Do you not ? see screen shot below:

sure, I know the function add column. But the site seemed to be wrong...

How I said, I added a column to each site wich "video" but there it doesn't work... :-(

Thank you for helping

 Hard to know without actually looking at the page builder and looking at the site.  Post some screen shots of the builder layout of the page you are changing and screenshots of the actual page.

 Have you turned all cache OFF for development time? 

Please note that some pages could be hard-coded and there are no ability to change them via Page Builder.