The curator should be someone who has strong contacts in the creative community where you plan to hold the event. Having a well known curator who has a good public profile and can be a focus of media stories to help publicise the event would an advantage but not essential.
The curator’s role is to work with the event manager to identify what type of artists and how many performances are required for the identified venues. Having a site inspection will allow the curator to identify what will work in each of the venues. Two to three acts performing at each venue is ideal and won’t overstretch the production or artist’s budget.