You’re likely to be dealing with difficult and frustrating situations. To help manage emotions:
Have a support person with you, who can remain calm and take the lead in the conversation if you need them to.
Ask to take a break. Call someone, go for a quick walk, or sit outside until you feel better.
If the other side is becoming emotional or frustrated, you could also suggest a break.
Try to listen quietly while the others involved describe their thoughts. It helps to keep frustration from building, and hopefully they’ll do the same for you.