Step 1: Customize your registration form
Go to the "Settings" tab > "Sign up form" > Click on "Sign up form" then on "Configure".
Scroll to the end of the list > Click on "Add a field".
Select a field > Click on "Confirm".
If you want to make a field mandatory, check the "Obligatory" box on the same line.
As soon as you make a field obligatory, it automatically appears on the modification form.
You can also click on the trash can icon to archive your fields.
On the right, you have access to the preview of your sign up form.
Step 2: Customize your modification form
Click on "Modification form".
This is the same method as for the sign up form.
If you need more help with the settings of the back office. See this section !