Where is here? Thai Immigration or at a Thai Embassy or Consulate?

Because you are not even remotely clear I don't see how anyone can answer your question

What Visa are you in Thailand on?

@Robert ******

- I disagree. The only rule I know of is do not NAME a Visa Agent. I an quite confident that as a proven practical matter that a new foreign employee at a small school that has never hired a Foreign employee before will be hard pressed to get the B Visa and Work Permit without onsite Consultation by someone experienced to guide them through. Robert you are detached from the situation from having 13 years of experience living here. What we have here is two newbies - a small school and a new foreigner as employee.

@Alyse ******************

- The WebSite would be in the name of the Thai Consulate or Embassy in a neighbor country where you may gave to go to get you B Visa. Example - Thai Embassy in Vientiane, Laos.

The Thai Consulate you go to and/or the local Thai Immigration office will have the information you need - either inline or in printed form.

Also your small school may need to hire a Visa Agent... Often local Accountants act as Visa Agents

But by matching your and your wife's visa / extension status to only being required to report to Thai Immigration every 90 days - you would be better off (in most people's opinion)

With a Non Imm O-A Multij Entry Visa - You could if you choose - exit Thailand every 90 days - If you choose to do so - but not required.

You may be able to get a Non Imm O Multi Entry in the U.K. (but it is not commonly issued these days)... But even if you get it... Your Non Imm O-A Multi-Entry Visa (oddly enough) does not require you to leave Thailand every 90 days - Her Non Imm O multi-entry Visa would require her to exit and reenter Thailand every 90 days... A mis-match of Visas.

She would need to buy a multiple Reentry Permit at the local Immigration Office