Customize an existing app.

Hello, So I saw an app on codecanyon, These are the apps, Online Salon Appointment Booking Solution - Book My Salon Webscript [login to view URL] Online Beauty Salon or Spa Booking Solution - Book My Salon App [login to view URL] The webscript and the app are sync together and everything. After I purchase those two items from codecanyon I would like someone who knows Platform- Ionic 3, Angular 4. Back-end- Codeigniter(Framework), PHP 5.6 MySQL database To be able to edit the script for me and add a little customization for me. I would like to make the following customization: For the Customer, I would like to change the label to "Owner(s)" and for the Users, I would like to change the label to "Member(s)" For the Customer (owner) functions - I would like to remove the "Shop" option for it, where they are not allowed to add shops, but they can view their shops information and details, or edit it and change their hours of operation if needed, Only the admin can add shops and select the owner of the shop and assign the shop to that owner, this way admin can control the shop's location. As for the Booking - I would like to be able to have three different status. BOOKED - Made when the user/member creates the booking after they had selected the service and the shop's location, and select the time that they preferred, and is available. CONFIRMED - Made after the customer/owner have confirmed the appointment that was booked with the user/member. The customer/owner confirms the location and time of the appointment when they contact the member/user directly through, phone number or email of the member/user. COMPLETED - Made when the customer/owner have completed the service to the user/member once they show up to their appointment. Owner/Customer have to type in a booking-code/number (this booking-code/number is different than the Booking ID) in order to change the status of the booking into COMPLETED. In the Users/Member front-ends/dashboard/main menu - users/members can view their Profiles - (no changes to the original) My bookings - (no changes to the orignal) My Appointment Codes - ( This is the added features that I would like to add. ) For this in the Admin, the Admin can generate these codes and assign them to users/members. These are the redemption code that I would like to have added into the webscript, and once they used the code, by providing it to the Customer/Owner at the shop, the code status would change to UNUSE to USED or AVAILABLE to REDEEMED. To show the user/members if they had used or not use the code yet. And also for the admin to keep track if the code have been used or not yet. Log out - (no changes to the original) These changes are important, I wanted to know if you can make those customization first Thanks! Looking forward to hearing from you!