更改Drupal 6中的字段布局

I have a field called field_event_location, and this field has 5 different values possible for a location. These are set as check boxes (widget).

When the admin selects locations, these are all appended together (concatenated) without spaces or commas, making reading difficult.

The field type is term reference.

I'm trying to see if there's any additional way to stay this (it only needs minor styling).

Any suggestions? Do I need a custom module?

Here's an example from the Pro Drupal Development book:

$options = array(
    'poison' => t('Sprays deadly poison'),
    'metal'  => t('Can bite/claw through metal'),
    'deadly' => t('Killed previous owner')
);

$form['danger'] = array(
    '#title' => t('Special conditions'),
    '#type'  => 'checkboxes',
    '#description' => (t('Please note if any of these conditions apply to your pet')),
    '#options' => $options,
    '#weight' => 25
);

This should render a fieldset with the title, options stacked vertically, and the description below.