Cant add side bar after installing the Wiki Plugin.

Hi Again,

I had an issue yesterday where my wiki pages weren't working because of permalinks.

We managed to fix that but today I am trying to add my right sidebar to the wiki "page attributes" "template" selection is missing.

How do I add a sidebar with the function missing? is it something simple I have done wrong. I have looked under screen options but cant see what I need.

Any help would be great, keep up the good work.