Flutter App Modification (Bookable Products)

Hi, I am looking for someone who has experience with Flutter App. I want to make some modifications to the app so that it can be used by businesses such as beauty salons, skin clinics and hair salons to take appointments and payments through the [login to view URL] it works well with normal product purchase. 1) When you view a bookable product in the app it shows a booking date input field with a datepicker however the functionality has not been completed. I need the booking functionality completed in the Flutter app. 2) I would like to have one more icon similar to cart in the app navigation bar to “Appointments” by creating new app screen which loads upcoming and past appointments. The appointments should load as a card with the appointment details such as date and time, vendor name, price, etc. If the appointment has not been paid then pay now button should be shown. When clicked the user is presented with the normal checkout experience. When the user clicks on the History tab all previous appointments should be loaded as cards. 3) Integrate the payment gateways from Woocommerce into the app.( We have already setup payment gateways on Woocommerce, so I think it should just call that) May be this task is already working. 4) Some branding related change like name, logo etc. 5) Setup social login and Firebase functions. 6) Submit to App and Play Store after testing. Note : 1) I am using Dokan Multivendor Plugin. 2) Dokan integration and configuration with app is already done. You just need to work on above customisation. 3) I will be providing any help needed with Woocommerce. You just need to work on App side changes.