what is the proper way to address the mayor
The proper way to address the conductor of a symphony orchestra is 'Maestro.'
The proper way to address an envelope for a Ph.D. is "Dr. [Full Name]" followed by their address.
the proper way to address the Queen is by "your majesty" or Ma'm, pronounced like "ham'
"Your honor"
usted. or ustedes.
Gentlemen
The proper way to address a Doctor of Osteopathic Medicine (DO) (not Doctor of Osteopathy) is Doctor (Dr.) since they are medical physicians.
Certainly challenging an elder (or anyone else, for that matter) can be done disrespectfully, but if it is done in the proper time, place, and way, it can be done respectfully. A good way to begin might be to ask the elder if you can discuss something that you do not understand. The elder may be able to explain the issue to you, or if you have a valid point he or she may accept your input.
Master John Doe
What is the proper way to address a meeting location in the Board Room of a building
The proper way to address a mailing envelope is to place the stamp at the top right corner, add the senders return address on the top left corner of the envelope with the recipients full name and address in the middle of the envelope.