The first thing you'll want to do after installing is add a link to the Feature Requests page in one of you menus.
Navigate to Appearance > Menus.
Select the menu you want to add the link to:
Click Custom Links.
For the URL enter "/feature-requests" (See: Customise the URL).
For the link text, I have entered "Feature Requests".
Click Add to Menu.
Click Save Menu.
Congratulations! You've now added a link to the feature requests archive.
Tested the link and seeing a 404 page? Double check the URL entered. If all looks OK, take a look at the 404 troubleshooting article.