Typically the Org name is set within the Kentico UI under Settings > Content > Metadata > Page title prefix.
Thank you, I do see that.
In the upper left of the Settings window, select your site in the dropdown list. Then go back to that field and you'll see you can edit the value from there.
Just adding documentation links for future reference: Content settings -> metadata section Editing metadata -> the green "Global metadata settings" info box part
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