What is the process for obtaining a Covid extension at Chiang Mai Immigration?

Chiang Mai Immigration, Covid Extension:

Hey everyone, went to CM immigration for my 3rdCovid Extension this morning. Originally I entered with a visa exemption. Was a little concerned based on some of the posts by people (most of whom have never even been on the covid extensions, just rank people based on their visa status because they have nothing else in life other than being old) stating there’d additional documents required such as flight tickets, ext.

I’m happy to report there were no changes to the application process. Initially when I was going through the first phase of document checks the volunteer took my passport to an immigration officer to verify I was able to get an extension, after that no issues though. I arrived about 8am, got que number 5, office opened at 8:30, had my passport back at 9:08.