Go to the immigration on your location, Already they will give a needed document list. 400K bath must stay in bank maximum 2 months after that you can apply
It doesn't work like this announcement. Here each office writes different issues. I applied with the letter from the embassy. Thay started my 2-month extension visa from apply day
I hope. Just someone tells me that first I must go out of Thailand and I must get a family visit visa from out first. I couldn't be sure this is why I wanted to open this topic.