You will need the Forms permission to perform this action.
There are two ways you can add a new form. The first is to click on the "New" drop down menu at the top of any page, and click on "Form."
The other way is to navigate to the form listing and click on the "Add New" button at the top.
Regardless of which method you choose, a pop up will with following fields:
Name - the name of the form
Once you're done, click on the "Create" button to finish. You will be redirected to the form to start designing.
The form will be created as "Unlisted." This means the form will not be shown to other users on the form listing screen unless they have the Forms permission.
By default, the user who created the form will be notified of any submissions. This can be changed in the form settings however.