Move Top-Nav-Point "Activity" under "Community"

I'm using BuddyPress und BP-Social.
Is it save, to move the Top-Navigation-Point "Activity" as a Sub-Navigation-Point under Community?

I would like to have a structure like that:
- Home
- Community
-- Activity
-- Members
-- Groups
-- Blogs
- Welcome (some static page)

What is the best (and safe) way to do this?
I'm a bit afraid, moving such an important Slug from the Top-Navigation...

Thanks in advance,
Rainer.