Actions of the intermediaries affect the principal.In many situations, the actions of intermediaries affects the principal. So the intermediaries should do the task in a legal manner or in the manner so that not affecting the principal or others.
In a marriage hall the misbehaviour of one single person will affect whole marriage party including the contractor.
During my marriage, the barat, jaanvas was through a pucca main road. To my surprise all buses and vehicles silently followed ours without any horning or urgency. But I saw a marriage barat in a main road of a major city yesterday evening but the parties made public feared with their sound crackers. Everybody on the road scolded them.
Similarly a deadbody procession went on the road today by spreading flower bits almost throwing on others and some were fallen on the people sitting in the buses crossing there. Everybody scolded them as if the concerned is responsible.