Tooltip in Label fields

Hi,

Watching the last Customer Showcase with Pressworks, I saw that they use tooltips near the name of fields.

Researching here, in the community, I saw this request already in gray (Tooltips for fields - #5 by Tobias), so I think that is the code for something that was solved.

How can I do to create tooltips other than that ones on action buttons?

Thanks in advance and nice weekend to you all, Marina

Hi, someone knows how Pressworks did it?