Create Custom Groups Tab

yzc_create_custom_group_tab.php

<?php

/**
 * Create Custom Groups Tab
 */

add_action( 'bp_actions', 'yzc_create_custom_group_tab' );

function yzc_create_custom_group_tab() {

    if ( bp_is_active( 'groups' ) && bp_is_groups_component() && bp_is_single_item() ) {

        global $bp;
    
        // Get Current Group.
        $current_group = $bp->groups->current_group;
        
        // Add New Group Tab.
        bp_core_new_subnav_item(
            array(
                'position' => 12,
                'slug' => 'custom-tab',
                'name' => __( 'Custom Tab', 'youzify' ),
                'parent_slug' => $current_group->slug,
                'parent_url' => bp_get_group_permalink( $current_group ),
                'screen_function' => 'yzc_custom_group_tab',
            ), 'groups'
        );

    }

}

/**
 * Custom Group Tab Content
 */
function yzc_custom_group_tab_content() {
    echo 'test';
}

/**
 * Custom Group Tab Content
 */
function yzc_custom_group_tab() {

    // Call Tab Content.
    add_action( 'bp_template_content', 'yzc_custom_group_tab_content' );

    // Load Tab Template
    bp_core_load_template( 'buddypress/groups/single/plugins' );

}