If I'm understanding you correctly, you can't send a landing page as an email. You can add the link to the landing page in an email. To move assets to programs from the design studio, simply right click, select move and select the corresponding program.
Yes, it is an approved landing page... What I am trying to do is to send it out as an email? Or is it possible to somehow move it to Design Studio as a template so I can select it when I am trying to send out an email?