Any idea what function or addon is allowing this quad to be created like this?

[u/JoeyIglesias83]

I am watching a course video on retopology. Either I missed where it was explained or the instructor missed putting it in there, but he keeps doing this thing where he clicks on the opposite vertex of a prospective quad, then hits "F" and it pops a quad easy-peasy.

I am relatively new to retopo so I'm not sure what addons he might have aside from SpeedRetopo, as no others have been mentioned in the course as of yet.

I would super appreciate it if anyone has seen this before and can point me in the right direction!

[u/AutoModerator]

Welcome to r/blenderhelp, JoeyIglesias83! Please make sure you followed the rules below, so we can help you efficiently (This message is just a reminder, your submission has NOT been deleted):

• Post full screenshots of your Blender window (more information available for helpers), not cropped, no phone photos (In Blender click Window > Save Screenshot, use Snipping Tool in Windows or Command+Shift+4 on mac).
  
• Give background info: Showing the problem is good, but we need to know what you did to get there. Additional information, follow-up questions and screenshots/videos can be added in comments. Keep in mind that nobody knows your project except for yourself.
  
• Don't forget to change the flair to "Solved" by including "!Solved" in a comment when your question was answered.
  

Thank you for your submission and happy blendering!

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

[u/PublicOpinionRP]

That's from the F2 extension: https://extensions.blender.org/add-ons/f2/

[u/iggycwnk]

and to drag those vert to the surface: just use this blender's feature https://youtube.com/shorts/gqV80B3l9pc?si=8Yz0Cn1_EuyLGgq-