BuddyPress.org

@destac There are different ways to implement the new feature. For the screenshot, I did it in 4 simple steps.

Note that you might need to adjust how the widgets are registered, named, or styled based on your theme.

1. Registered three new widget areas in the child/theme’s functions.php file.

<?php // Only add this line if you are adding this to an empty functions.php file
/**
 * Register three widget areas for Members front page.
 *
 * @since My Child Theme 2.6.0
 */
function my_child_theme_widgets_init() {
	register_sidebar( array(
		'name'          => __( 'bp-members-1st', 'my-child-theme' ),
		'id'            => 'bp-members-1st',
		'description'   => __( 'Appears on each member\'s front page.', 'my-child-theme' ),
		'before_widget' => '<aside id="%1$s" class="widget %2$s">',
		'after_widget'  => '</aside>',
		'before_title'  => '<h2 class="widget-title">',
		'after_title'   => '</h2>',
	) );

	register_sidebar( array(
		'name'          => __( 'bp-members-2nd', 'my-child-theme' ),
		'id'            => 'bp-members-2nd',
		'description'   => __( 'Appears on each member\'s front page.', 'my-child-theme' ),
		'before_widget' => '<aside id="%1$s" class="widget %2$s">',
		'after_widget'  => '</aside>',
		'before_title'  => '<h2 class="widget-title">',
		'after_title'   => '</h2>',
	) );

	register_sidebar( array(
		'name'          => __( 'bp-members-3rd', 'my-child-theme' ),
		'id'            => 'bp-members-3rd',
		'description'   => __( 'Appears on each member\'s front page.', 'my-child-theme' ),
		'before_widget' => '<aside id="%1$s" class="widget %2$s">',
		'after_widget'  => '</aside>',
		'before_title'  => '<h2 class="widget-title">',
		'after_title'   => '</h2>',
	) );
}
add_action( 'widgets_init', 'my_child_theme_widgets_init' );

Adjust items registered in child theme based on how your theme is setting up the widget areas.

2. Created a new file front.php which should be located as follows: wp-content/my-child-theme-folder/buddypress/members/single/front.php
(Create the buddypress, members, and single directories/folders if you do not have those in your theme yet.)

Added the following in the front.php file:

<?php
/**
 * BuddyPress - Members Front Page
 *
 * @since My Child Theme 2.6.0
 */
?>

<div class="bp-member-front-wrap">

	<div class="bp-member-front-1">
		<?php dynamic_sidebar( 'bp-members-1st' ); ?>
	</div>

	<div class="bp-member-front-2">
		<?php dynamic_sidebar( 'bp-members-2nd' ); ?>
	</div>

	<div class="bp-member-front-3">
		<?php dynamic_sidebar( 'bp-members-3rd' ); ?>
	</div>

</div>

3. Added some styles:

.bp-member-front-wrap {
	clear: both;
	margin-bottom: 2em;
}

@media screen and (min-width: 46em) {
	.bp-member-front-wrap {
		clear: both;
		margin-bottom: 1em;
	}
	.bp-member-front-1,
	.bp-member-front-2 {
		float: left;
		margin-right: 1.5%;
		width: 32%;
	}
	.bp-member-front-3 {
		float: left;
		width: 32%;
	}
}

4. Went to Appearance > Widgets and add widgets to the Member Front Page Widget Areas.

As mentioned above, there are other ways to implement this new feature. Happy customizing!