Problems with Advertising Manager

I’m trying to put 2 different type ads on a page using the Advertising Manager (replaced Adsense Manager) & can’t figure out what I’m supposed to put on the page to activate the ad. When I put default on a specific ad its no problem as I just put [ad] where I want it & it shows. The question is what do I put on for the second ad? I thought [ad-1] but this doesn’t work. I’ve tried different combinations but none work. I’m stumped! any help out there?