What are the steps for extending a tourist visa at Jomtien Immigration?

Just completed my 30 extension at Jomtien Immigration. Thanks to posts in this group, relatively easy process. 1. Yes, they wouldn't do extension, before 7 days prior to expiration of Tourist Visa. 2. Make an appointment online, you will get in and out a lot quicker, about 1 hour in my case. 3. Download copy of appointment, be prepared to show it, once or twice. 4. Near appointment time walk up to door marked exit, say you have appointment and show it to door monitor. Don't stand in line. 5. Make copies of everything needed before hand. I went to copy center in Ban Amphur, costs 1 Baht per copy. Thanks. 🙏