How Can I Add Dynamic Links to Wordpress Menus?

I currently am creating a BuddyPress site for a client and I wanted to know whether it is possible to add a "My Profile" and "My Account" button to the standard Wordpress menu.

Ideally I need the link to be dynamic as I'd like the user to be able to click the button and have it go direct to their account.

Additionally I'd like to know how to make the buttons only appear if the person is logged in.

If it helps I currently am using the Huddle buddypress theme and it only has spaces for two menus (one top, one footer).

Thanks very much for any assistance.