The people who design, plan, and organize your event are planners, coordinators, or designers.
The teams who perform these services usually offer full-service planning, event design, à la carte planning, day-of coordinating, or a mixture of those services.
If you're not sure what kinds of services you might need, reach out to these folks via phone or email. They'll be happy to explain how they can help make your wedding or event an amazing experience.
Although I can recommend these companies based on experinces, before you make your final hiring decision, interview carefully and ask hard questions. Please make absolutely sure that they're the right fit for you.