Make modifications to the program in Codeingnitor

We require you to make modifications to the program in Codeingnitor: We have acquired the source code of a reservation system (we receive periodic updates from the provider), we require some modifications of this source code. The changes that we need to add extra fields to define more types of hotel and tour guests; currently only "Adults" and "Children", you must add the types of guests: Seniors, Teenagers (teens) and Babies (infants). When adding these new types of guests, the functions of the program should remain the same, only now, these new types of guest or travelers are included. The searches must include these new fields, in their search criteria, as well as the reservations and the information stored in the system. Modifications to the source code should be made in separate files (not in the originals, since these can be replaced by periodic updates), the source files should be delivered and indicate in which folder they should be. The original files that must be modified (with for example an "include ())", it must be documented what was changed, in what line and the purpose of the change. In the same way, the data that must be stored in the tables must be made in new tables (NOT in the original tables), concerning the new records, with the records of the previous tables (Join) and of documenting the delivery of the new tables (name, purpose, where it is used) .. All the modifications that are made must be functional both for the "administration panel" and for the "web page" and the settlement of the reserves. * For the recruitment, we require that you understand the changes that will be made. For this, read the document and use the URLs to review the platform. Ask all the questions you want, to ensure that you understand the project. * The maximum delivery time is 10 Days and our maximum investment budget for this achievement is $ 300. * If you are hired, we require progress reports and tests at least three times a week. * Non-communication may be grounds for cancellation of the contract. * Our local time is GMT -5 hours. Our language is Spanish and we can also communicate in English. * We can leave you a bonus according to your effectiveness and goal fulfillment. In this "administration panel" you can see everything explained in this document Please read the attached document very well, in this everything that should be done step by step. Thanks Andres Rubio Torgler