hmmm maybe I’ll take a trip to BOI and ask but from what I read I was expecting a 5 year stamp then ask for the second 5 year. Again this is so new there are bound to be glitches in the understanding of how it works.
actually we are approved for 10 years but actually receive a 5 year stamp and as you stated it’s not clear what will be required to be issued the second 5 year stamp. What BOI told me was it would be confirmation that you still qualify hence income and medical insurance.
You have to apply to BOI first. They will issue a letter to you if they determine you are eligible. During the process you will pick the Thai Consulate nearest you. Upon being granted the letter , you can send it to the Consulate for them to issue your LTR visa. From my understanding you will print out the email from the consulate and when you enter Thailand your passport will be stamped with the LTR visa. Everything is done online.