What are the procedures and benefits of applying for a 60-day Covid extension at Chiang Mai Immigration?

A user shared their experience obtaining a 60-day Covid extension at Chiang Mai Immigration, noting that the countdown for the extension begins on the day of application, which in their case, was 17 February, lasting until 18 April. They advised applying close to the end of the visa's validity to maximize the extension period. Additionally, they highlighted the efficiency of the process, receiving the new stamp within 10 minutes after getting the 'under consideration' stamp.