How do I give people an option of selecting the language of the form?

I created two forms. One in English and another in Spanish. How can I give people the option of selecting which language they would prefer the form? 

You can use the Language Tool in the Form Builder to add a multi-language option on your form.

Please refer to the user guide: -How-to-make-your-forms-multilingual

Let us know if you need further assistance on this.

Thanks.