Hi, I need to insert conditional fields during the registration of a user.

I'll explain.

Case 01:
Inserts the number of work experience: it can be a number from 0 to 99
Show a variable number of windows from 0 to 99 based on the numbers entered by asking for each experience:
Company:
Role:
Remuneration:

Case 02:
Choose from a multiselect with 100 languages ​​the number of languages that you speak: eg English, French, German
Choose, based on the number of known languages​​, for each level:
English: Fair / Good / very good
French: Fair / Good / very good
German: Fair / Good / very good

Case 03:
Inserts the province
Select your town according to the province included

How can I do?
Thank you.