if you have to ask such things, maybe you should think about whether that job is for you, that is, whether you are for that type of job.
The campaign manager must be the one who starts the initiative, leads part of the project, presents it and controls the effect of a large number of participants (bounty hunters). if you have to ask how to start, what will happen to the first obstacle you come across and who will bear the consequences of your insecurity? think honestly, about whether you, as the project starter, would leave marketing in the hands of someone who does not know how to start.