Scheduling

"Your town does have a fine plaza, I confess. I do wonder one thing about it."
"What's that?"
"It seems sellers from one guild only are doing business here. I'm sure that helps keep the space open and orderly, but how do they decide which guild is permitted to make use of it? Is there a schedule of some sort?"
"I must declare you have chosen a good time to ask. Take a look over there." Welvin nodded toward the far side so as to guide his companion's gaze as the ground shook beneath them. A giant entered the plaza from the right, a clattering giant of clay and vim. From the left floated a great sheet draped over a person who was not there.
"Oyez, oyez! Ladies and gentlemen of the Dyers Guild, please pack up your stalls! Everyone else, keep your distance! The battle between Pottery Golem and Textile Ghost begins . . . NOW!" The crier threw a flag down in the middle of the plaza and ran. Pottery Golem swiveled on its expertly crafted hips and swung its massive fists while Textile Ghost floated around the blows and bumped into its opponent, each action winning cheers from the watching members of the Potters Guild and Textiles Guild respectively.
"That ought to clear it all up, I think."
"Very much so."
Finis