How do you as store admin hide the voucher field in the checkout process? Is there an method by which you can hide the voucher code depending on for instance a customer is logged in or belongs to certain group or simply is only shown when a customer is not yet assigned to a group ?
Is there an addon that would make it possible just to turn it off ?
design/themes/THEME/templates/views/checkout/components/promotion_coupon.tpl
if Gift Certificates module enabled, use this template
design/themes/THEME/templates/addons/gift_certificates/hooks/checkout/discount_coupons.override.tpl
To hide by login status
{if $auth,user_id}
...
{/if}
To hide by user group
{if 123|in_array:$auth.usergroup_ids}
....
{/if}