You shouldn't need an auto action for that. You can use a Query field to pull that information down dynamically and automatically. The below should work for example.
Query:
Code:
SELECT g.`name`
FROM `#__groupjive_users` AS u
INNER JOIN `#__groupjive_groups` AS g
ON g.`id` = u.`group`
WHERE u.`user_id` = '[user_id]'
Output: Multiple Rows
Columns: Single Column
Delimiter: Span
Now you can use CSS to style the span elements surrounding each group name to look like tags or whatever you like. Will review adding a Tag delimiter option for a future release though so it's even easier.
forge.joomlapolis.com/issues/9253