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I wondered why, during the pandemic, it wasn't common to let elevators "air out" while they were idle. Given what we know about COVID-19 and how it spreads with aerosols. From looking at this list, it appears that that's not a mode they would have by default.

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As someone who works in the elevator industry this list is pretty odd and is missing many modes that I would consider default modes.

However to get back to "airing the elevator out". Do you mean just not closing doors after serving a call? Maybe having someone timeout after serving a call to not move? Or actually installing fans to blow out the air?

In my building the elevator returns to ground. My preference would be to simply have the doors left open closest to the source of fresh air.

I work in an office building that's less than 5 years old. During the pandemic the elevators started returning to the ground floor and opening their doors. I wonder if the system is configured via the control panel in the elevator or if there's some other interface.

Sounds like it was in up-peak mode? https://elevation.fandom.com/wiki/Up_peak_(MIT)

More likely just a static parking rule. Usually "peak" modes are dynamic and only in effect when there is a lot of usage i.e. peak in traffic

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