Completely stuck on saving multiple checkbox and dropdown data in custom field

I have created a custom field for a site I am working on, however, I do not know how to save the data since it is loading multiple checkboxes and dropdowns, I have tried multiple things and searched Google extensively but I cannot find a solution, any help is greatly appreciated:

// Staff Dropdown
add_action('add_meta_boxes', 'jpg_affiliated');
function jpg_affiliated()
{
	add_meta_box('jpg_affiliated_staff', 'Who Was Involved?', 'jpg_affiliated_staff_callback', 'post', 'normal', 'default');
}
function jpg_affiliated_staff_callback($post)
{
	$values = get_post_custom($post->ID);
	wp_nonce_field('jpg_affiliated_nonce', 'jpg_affiliated_nonce_field');
?>
	<p><strong>Select any staff that were involved in this event and what their role was.</strong></p>
<?php
	$team = new WP_Query(array('post_type' => 'jpg_profiles','post_status' => 'publish','posts_per_page' => '-1', 'orderby' => 'title', 'order' => 'ASC'));
	while($team->have_posts()) : $team->the_post();
?>
    <div style="overflow:hidden;padding:0 0 10px 0">
        <table>
        	<tr>
            	<td width="10%"><input type="checkbox" id="" name="" value="<?php echo $values['jpg_test'][0]; ?>" /></td>
                <td width="40%"><label for="jpg_test"><?php the_title(); ?></label></td>
                <td width="50%">
                	<select name="" id="">
                    	<option value="">Select role...</option>
                        <option value="Primary Shooter">Primary Shooter</option>
                        <option value="Second Shooter">Second Shooter</option>
                        <option value="Third Shooter">Third Shooter</option>
                        <option value="Lighting Assitant">Lighting Assistant</option>
                        <option value="Photo Booth Coordinator">Photo Booth Coordinator</option>
                        <option value="Marketing Coordinator">Marketing Coordinator</option>
                        <option value="Studio Manager">Studio Manager</option>
                        <option value="JPG Team Member">JPG Team Member</option>
                        <option value="Photogrpaher">Photographer</option>
                	</select>
                </td>
            </tr>
        </table>
    </div>
<?php
    endwhile;
    wp_reset_postdata();
}

add_action('save_post', 'jpg_save_associated');
function jpg_save_associated($post_id)
{
	// Bail if we're doing an auto save
	if(defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) return;

	// if our nonce isn't there, or we can't verify it, bail
	if(!isset($_POST['jpg_affiliated_nonce_field']) || !wp_verify_nonce($_POST['jpg_affiliated_nonce_field'], 'jpg_affiliated_nonce' )) return;

	// if our current user can't edit this post, bail
	if(!current_user_can('edit_post')) return;

	// Probably a good idea to make sure your data is set
	if(isset($_POST['jpg_test'])){update_post_meta($post_id, 'jpg_test', esc_attr($_POST['jpg_test']));}
}
?>