Edit: See screenshots in my comments below for the correct information.
I'm on the Thai E-visa website completing an application for a Non-O visa.
I've attached a few screenshots of the key parts of the application.
What is a Letter of qualification endorsement issued from Thailand Board of Investment (BOI), how do I get one, and what difference does it make if I'm applying for a retirement visa and have no intention to work? A bank statement I could understand. This? ???