Is it possible to display more than 1 advertisement in a custom advert location?

For example:

{advertisement="sidebarblock"}

If I set 3 adverts to this location, it only displays 1 of them, can I get them to loop so it shows all 3 in a list? Rather than having to create a unique custom location for each one.

Thanks in advance.

If you set all 3 up with the same custom ad name they should loop depending on your settings. If you want all advertisements to show at once, you will need to create multiple custom locations.