BuddyPress.org

@villnoweric
Just remove Home from the menu, then add activity to your custom menu. Then change the navigational label to “Activity Feed” or whatever you wish!

@villnoweric
The codex is your Buddy!
https://codex.buddypress.org/user/setting-up-a-new-installation/how-to-set-up-your-main-site-navigation-using-the-built-in-wordpress-menus/

@villnoweric
Try this it is a slightly modified snippet I did earlier but fits your requirement. Follow the instructions in the code.
// PLEASE NOTE FOR THIS TO WORK:
// Before adding this code to bp-custom.php
// https://codex.buddypress.org/developer/customizing/bp-custom-php/
// you will need to create a new page in the dashboard and name it
//…[Read more]