Hi Brendan,
Thank you for posting. Can you please point me to the plugin you are using to restrict categories. I will need to add compatibility for the specific plugin to make it work together.

Thank you
Brajesh

Hi Brendan,
There are many I have seen in the past. I don’t have any particular choice. It will be nice to know your preference and provide a way to have it.

Thank you
Brajesh

Hi Brendan,

Brajesh Sir is away so I am posting here. Please use the following code in your bp-custom.php file
and let me know if it works or not.

function buddydev_filter_buddyblog_settings( $settings ) {

    if ( ! is_user_logged_in() ) {
        return $settings;
    }

    // Get the current user in the admin
    $user = new WP_User( get_current_user_id() );

    // Get the user role
    $user_cap = $user->roles;

    // Get the user login name/ID
    if ( function_exists( 'get_users' ) )
        $user_login = $user->user_nicename;
    elseif ( function_exists( 'get_users_of_blog' ) )
        $user_login = $user->ID;

    $defaults = array( 'RestrictCategoriesDefault' );
    // Get selected categories for Roles
    $settings = get_option( 'RestrictCats_options' );

    // Get selected categories for Users
    $settings_user = get_option( 'RestrictCats_user_options' );

    $user_key = $user_login . '_user_cats';

    $term_ids = [];

    if ( is_array( $settings_user ) && array_key_exists( $user_key, $settings_user ) && count( $settings_user[ $user_key ] ) > 1 ) {

        $settings_user[ $user_key ] = array_values( array_diff( $settings_user[ $user_key ], $defaults ) );
        $user_terms = $settings_user[ $user_key ];

        foreach ( $user_terms as $term ) {
            $term_ids[] = get_term_by( 'slug', $term, 'category')->term_id;
        }

    } else{

        foreach ( $user_cap as $key ) {

            if ( is_array( $settings ) && !empty( $settings[ $key . '_cats' ] ) ) {

                $settings[ $key . '_cats' ] = array_values( array_diff( $settings[ $key . '_cats' ], $defaults ) );
                
                foreach ( $settings[ $key . '_cats' ] as $category ) {

                    $term_ids[] = get_term_by( 'slug', $category, 'category' )->term_id;

                }

            }

        }

    }

    $settings['tax'] =  array(
        'category' => array(
            'include' => array_unique( $term_ids ),
            'view_type' => 'checkbox'
        )
    );

    return $settings;
}
add_filter( 'buddyblog_post_form_settings', 'buddydev_filter_buddyblog_settings' );

Thank You
Ravi

Hello Brendan,

It should be in “wp-content/plugins/” directory. If it is not present create one. You can refer following url

https://buddydev.com/docs/guides/guides/buddypress-guides/what-is-bp-custom-php/

Thank You
Ravi