Laravel Voyager participants registration prortal

{ "options": { "double": "double", "double_separate_beds": "double_separate_beds", "double_singel_bed": "double_singel_bed", "single": "single", "appartment_single": "appartment_single", "appartment_double": "appartment_double" } } A registration portal for participants in a competition. Most of the system is build, but I'm finding difficulties creating relationships between different tables and building dynamic dropdown inputs, as well, aggregating values of certain fields. The project is built on Laravel Voyager 1.0 Framework. So for example I have a view where a party can state how many people of their group will need accommodation. They will have the option to choose between few venues. So the first input in the venue is a dropdown with possible venues. Second input is the type of room (double, single, etc), which solely depend on the first input (ex. first venue only have double and single rooms), then the third input is the price per night, which depends on the first two inputs. Then the user choose duration of stay, chech-in, check-out, number of people and next field is total price, which I need to be calculated dynamically based on price per night nights to stay and number of people. There are couple of more user views that I need help with. But the things that need to be done are similar.