Recently active topics in PBwiki tagged with default

I've got 3 tabs - QuickStart, Recent Activity and SideBar. How can I get the SideBar to show by default to anyone visiting my wiki?

I'd like a way to have a template be the default selection for all new pages. Is there a way?

My authoring text defaults to lucida sans, whether I am just adding new text, adding a table row, or adding a link. I am constantly having to "select all" and change all to Arial. For instance, everything is Arial - I add a link - and the link becomes Lucida Sans. I can change all table text to Arial, add a new row, and the new row is Lucida Sans.