What documents are needed for a Non-B visa for teaching jobs in Vientiane, and do my Lebanese diplomas need special certification?

Hello TVA family.i have a question regarding the non b for teaching jobs that can be acquired at Vientiane. Has anyone gone through this process and can shed some light on the documents required. My employer will take care of everything but I have a question regarding the diplomas and transcripts. I know they are required in Vientiane to get a non b for teaching but should these diplomas and certificates be copies of originals? I'll explain my question: my diplomas and transcripts are from lebanon and my passport is from venezuela. My diplomas and transcripts are stamped by the registrar office in the respective school/University and they are also stamped by the lebanese ministry of education and foreign affairs and also by the Thai embassy in Lebanon. does this mean they are certified? Or do they still need the stamp of the Thai ministry of foreign affairs before going to Vientiane. Any help on the matter would be truly appreciated. I will ask my school to call Vientiane to ask but any help will be appreciated