Extension for Non-IM -O- Multiple Exits???

[SamMunich]

I read here a lot about Tourist Visa extensions and Non-Immigrants with Family Visa extensions, but what about those, who get their "Non-Im 0"  with multiple entries from a Thai Embassy/Consulate abroad. Will those visas be extended as well, following what criteria? If I can't exit after 90 days, because all flights are cancelled and all borders are shut, what's then left to do?
Will i get an automatic extension for 30 days each, until borders are open again? Do I have to apply at Chaeng Wattana or where, having what documents?
Questions and yet more questions...

[ubonjoe]

The 90 day entry from your visa will be extended every time they extend the emergency decree.

[SamMunich]

Thanks eversomuch, UbonJoe.