Select a project and click on the Wiki tab.

1 To set and unset a wiki page as "Main page" click on the list icon in front of any wiki page.

2 Choose "Set as Main page" and a new view is going to be displayed.

3 The Main page is then the first page you are going to see when you click on the Wiki tab. You could use the Main page as a homepage for the wiki, e.g. as a welcome message and an index of contents.