For people who may need to travel to Bangkok to get an Elite visa inserted, double check with them, and in particular if you are in Chiang Mai with official agent for Elite here (Google it, or ask Elite, not sure it can be said on this group), there have been reports that some people have been able to get the visa affixed without travelling to Bangkok (as is usually required to get it without leaving) due to the coronavirus situation.
TLDR : Answer Summary
Due to the coronavirus situation, some individuals have reported being able to have their Elite visa affixed without traveling to Bangkok, contrary to the usual requirement. It's advisable to verify with an official agent in Chiang Mai or directly with Elite for the latest information.