Possibility to add a custom answer to a choice field list in a form

Forms - Possibility to add a custom answer to a list

Currently, when I complete a choice list cell, it’s possible to dynamically add a new possibility.
See example below

Solution

Adding a button “Allow users to add new possibilities” below choices in the field view of the choice field when parametrizing the form

This button would be unchecked by default.

Drawbacks

It would be great to avoid a too great numbers of possibilities to be added. Therefore this button could be completed with *