Two-step forms are useful because they allow you to gather information as it becomes relevant to your needs.
Contacts are also more likely to complete a short form than a longer one, so breaking up the submission process can be helpful.
To create a two-step form, copy the URL of your second form, then go to edit your first form and paste the URL into the “On Submit” area under “Options.” This configures the first form to automatically direct a contact to the second form upon submitting the first form.

Click here for help setting up a two-step form.
Read our guide to building multi-step forms to learn more.