It entirely depends on why they are yelling.
A yeller is someone who yells at someone else.
it means they crazy
Reprogram it.
Yells is not a person Yells is not a place Yells is not a thing Yells is a Verb.
Their workplace.
shut the door in her face
yells and cheers
It is when someone ggets clobbered over the head. The other person yells sambong!
Boy Scout yells may include patrol yells and troop yells. These are used to unify the Boy Scout troop. Other yells include those for meals or celebration.
If a risk/hazard is identified in the workplace and it is not dealt with, or reported to someone who can deal with it, then someone may be injured.
I hate to be blunt, but if you need to ask how? then you shouldn't be supervising anyone. How about taking some form of training course?
Feeling is how someone interacts with other people. Eg. if someone yells at me I would be sad. Sad is one of the feeling that is an popular feeling.