What is the process for the MTT COVID extension in Bangkok?

In Bangkok, the MTT COVID extension process is relatively quick, taking around 45 minutes despite being busy. It is advisable to complete the process as soon as possible, as office hours are limited and will be crowded later in the week. Comments from the community include questions about what documents are needed, with one user stating that a letter from the embassy is not required. There are also discussions about the impact of COVID-19 policies.