Miracast uses a direct connection and does not use your wireless infrastructure, so it will work fine for guests.
AirPlay is a bit more tricky, and you will need to work with your wifi implementation in order to allow guests to "see" it. (just like a regular Apple TV).
Hello @QuentinDavid,
welcome to the Polycom Community.
The community's VoIP FAQ contains this post here:
Jan 03, 2013 Question: How can I request a change to the current Polycom SIP / UC Software?
Resolution: Please check => here <=
This needs to be a feature request.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
Polycom Global Services
If official support is required please check how to phone or open a case here
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