BuddyPress

As there is already a Forum I do not see the need for members to give updates as on the Home tab of a group. This is confusing.

Does anyone know an easy way on how to disable this option in the latest version of BP?

If your BP theme or bp-default child theme doesn’t have one yet, copy over http://buddypress.trac.wordpress.org/browser/tags/1.5.3.1/bp-themes/bp-default/groups/single/activity.php to your theme folder following the directory structure, i.e. yourthemefolder/groups/single/

Open up activity.php file and delete the following lines:

<?php if ( is_user_logged_in() && bp_group_is_member() ) : ?>
<?php locate_template( array( 'activity/post-form.php'), true ) ?>
<?php endif; ?>

Save.