How do I change the BP-Social Home Page?

I have the BP-Social Theme installed and I would like to remove all widgets and widget areas & just have the header itself. Currently I have my active page after log in set to the activity page so needless to say when the site is viewed by a visitor who isn't logged in, it shows the header but to the right it says 'Please login to add a widget' and underneath the header it says the same thing to the left and right whilst in between states that it is a protected area and you need to log in to view it. I have the Membership plugin installed and it's reporting that message there because it is trying to display the activity page as that's what I have set. I don't want anything underneath the header nor do I want any widgets anywhere on the home page. Can anyone tell me how I can achieve this please?