A: Hi,

Thank you for the questions.

1) Does it have a lookup table option, where one dropdown element from a list changes the options from another list?
No.

If you are looking for something such as showing different states drop-down when selecting a country, we have this.

Using conditional logic, you can show different drop-down list based on the user's selection from the first drop-down question.

2) Can I create a form with 10 random questions from a pool of 100?
No.

3) Can the form submission be postponed until I allow the pdf generation?
No.

Thanks.
Luke