Vital BizForm
How do I add tags to a form?

Select [Add tags...] in the Tag field to choose from existing tags, or enter one of your own. Once finished, press [Enter] to add the new tag.

Select [Add tags...] in the Tag field to choose from existing tags, or enter one of your own. Once finished, press [Enter] to add the new tag.
https://faq.vitalyun.com/EN/BizForm#2945