Ceremony set up?

Hey ladies! We are having our ceremony inside. Our venue has these gorgeous large windows. I have been stalking the "location" of our wedding on IG to see other weddings, and found a couple that had a gorgeous wedding recently. They set up their ceremony with a "stage" and everything and it looked absolutely amazing (I love the stage, and I love the floral setup). I would LOVE to do something like this but I'm not sure where to start. Is this something that an event designer does? Should I reach out to the event designer that did this? look at wedding rental places? We already have our florist, so we don't necessarily need the flowers and such. It also looked like they repurposed the flowers in the ceremony for the reception centerpieces. I'm trying to figure out the best vendor to contact for this. Thanks so much! Photos below.