Programming more than one door on the same key is not done in Mews, but directly in your lock software. Mews can only send a command to cut a key for the requested space over the requested time frame.
You can set up the other doors in your lock software, so they are automatically added to the key when you send the request. This is because common doors do not, and should not, exist as rooms in Mews.
For further help setting up common doors, Mews recommends reaching out to your lock software provider.
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