What are the procedures to extend a non-B or student visa in Thailand?

To extend your visa in Thailand, specifically for a non-B (business) or student visa, you will need to provide proof related to your situation. For a non-B visa, your employer can assist with the necessary paperwork, while for a student visa, your educational institution can help. It's important to note that you cannot simply extend the visa itself; instead, you extend the period of stay as granted upon your entry with the visa.