Lock door if is closed and mode is not party?

Your best bet on what smartapp to use is CoRE. You can find it and the installation instructions here.

On how to create a new mode:

  1. Go to https://graph-na02-useast1.api.smartthings.com and log in.
  2. Click manage hub
  3. Click your hub location name
  4. Click ‘create new’ next to mode
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