Add New Specific Type to LocalBusiness Schema

I"m looking for information about how to submit a proposal for adding a new
specific type to the LocalBusiness Schema. Is there a pre-defined document
format in which to submit a proposal?

Where are these types of proposals submitted for discussion by the group?

Thanks in advance for the help.

Best,
Mustafa
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Mustafa Patni
Co-Founder
Email:  mustafa.patni@afterschoolz.com
Phone:  206.437.2949
Web:  Afterschoolz.com