How to respond to challenging behaviours
If you deal with people that display challenging behaviours remain calm.
Most times people get frustrated when they feel ignored, undermined or struggle to use their voice.
This approach can help de-escalating a conflict:
Listen to them quietly
Speak with a low tone and a warm voice
Keep reasonable physical distance
Avoid contradicting them
Accept their reality
Ask them what would be a good resolution for them
Aim to arrive to a mutually convenient outcome