Change Fields and eliminated others in the booking form

Hi!, I need help, please!

1.- I need change some fields and eliminated others in the booking form, where i can do that?

2.- Can I delete the calendar and leave a field where I can place the dates when the tour is?. for example, tour Nº1, leaves 4 times a year, we define these dates and the client choose which one he considers convenient.

3.- I created a couple of variants, but it looks weird on the form … https://prnt.sc/p5ti50

Thanks!
Greetings!