Verb conjugation of "soumettre" in French

In order to improve the language skills we changed some features on Vocabulix. From now on users can not only drill isolated lesson but adhere to a specific lesson plan. That means that they can set goals and seek help from other users.
I've also looked at the interface, and found it a good idea to include the colloquial option. Would it be very complicated to add the most important regional check box, like Spain, South America or Central America?
Thank you for your answer, my English is not very good, but it should be fun to learn together, don't you think? Generally, studying alone is no fun at all. So how do we proceed? How's it going?