Electro v2 - Departments menu clickable dropdown

function electro_departments_menu_v2() {

    $calling_action = current_filter();

    if ( 'electro_navbar_v2' === $calling_action ) {
    
        $theme_location = 'departments-menu';
        $menu_title     = apply_filters( 'electro_departments_menu_title', esc_html__( 'Shop by Department', 'electro' ) );
        $menu_icon      = apply_filters( 'electro_departments_menu_icon', 'ec ec-arrow-down-search' );
        $menu_title     = $menu_title . '<i class="departments-menu-v2-icon ' . esc_attr( $menu_icon ) . '"></i>';
    
    } elseif( 'electro_navigation_v5' === $calling_action ) {

        $theme_location = 'all-departments-menu';
        $menu_title     = apply_filters( 'electro_header_v5_menu_title', esc_html__( 'All Departments', 'electro' ) );
        $menu_icon      = apply_filters( 'electro_header_v5_menu_icon', 'ec ec-arrow-down-search' );
        $menu_title     = $menu_title . '<i class="departments-menu-v2-icon ' . esc_attr( $menu_icon ) . '"></i>';

    } elseif( 'electro_header_logo_area' === $calling_action ) {

        $theme_location = 'all-departments-menu';
        $menu_title     = apply_filters( 'electro_header_v6_menu_title', esc_html__( 'Categories', 'electro' ) );
        $menu_icon      = apply_filters( 'electro_header_v6_menu_icon', 'ec ec-arrow-down-search' );
        $menu_title     = $menu_title . '<i class="departments-menu-v2-icon ' . esc_attr( $menu_icon ) . '"></i>';

    } else {
        
        $theme_location = 'all-departments-menu';
        $menu_title     = apply_filters( 'electro_vertical_menu_title', wp_kses_post( 'All Departments', 'electro' ) );
        $menu_icon      = apply_filters( 'electro_vertical_menu_icon', 'fa fa-list-ul' );
        $menu_title     = '<i class="departments-menu-v2-icon ' . esc_attr( $menu_icon ) . '"></i>' . $menu_title;
    }

    $enable_dropdown = true;
    
    if ( is_page_template( 'template-homepage-v2.php' ) ) {
        $enable_dropdown = false;
    }

    $enable_dropdown = apply_filters( 'electro_departments_menu_v2_enable_dropdown', $enable_dropdown );
    
    ?><div class="departments-menu-v2">
        <div class="dropdown <?php if ( ! $enable_dropdown ):?>show-dropdown<?php endif; ?>">
            <a href="#" class="departments-menu-v2-title" data-hover="dropdown" <?php if ( $enable_dropdown ) : ?>data-toggle="dropdown"<?php endif; ?>>
                <span><?php echo wp_kses_post( $menu_title ); ?></span>
            </a>
            <?php
                wp_nav_menu( array(
                    'theme_location'    => $theme_location,
                    'container'         => false,
                    'menu_class'        => 'dropdown-menu yamm',
                    'fallback_cb'       => 'wp_bootstrap_navwalker::fallback',
                    'walker'            => new wp_bootstrap_navwalker(),
                ) );
            ?>
        </div>
    </div><?php
}