After you have confirmed a Gig, you can see the manager on duty's name and phone number in the Gig card. Also, you would see if the business posted any special instructions for the Gig that the business only wants you as the confirmed Pro to know.
This information can be important for you for the Gig, so please make sure you check your confirmed Gigs in your schedule tab in the app for all the information available about the Gig.