Registration Form - Add a field on the same row

Ok I'll try it. An other question do you know if it's possible to make a field enabled or disabled if the user choose an option is a drop down list ?

You can show/hide fields based off the value of other fields using CB Conditional. Besides that, no.

There is no free alternative for cb condiotnnal ?

Nope, not unless someone developed it, which is unlikely.

It's very annoying, there is no other options to say : "If user selects the first option in drop down list hide a field" ?

CB Conditional is a pretty complex plugin providing a ton of conditional capabilities and with CB Conditional 5.0.0 just releasing it got a lot more powerful. You're welcome to give it a try on our demo site below.

demo.cbdemosites.com/

You can also purchase just CB Conditional if it's the only plugin you need from our add-ons page below.

www.joomlapolis.com/addons

CB is built to be modular so you only install what you need. As time goes on we'll be moving more and more features to CBs core API library. It's likely conditions will eventually become a part of CBs core and at that point be available for free, but until then the only option is using CB Conditional.

I'm sorry it's not available for everyone, but we've to pay for all of this development somehow and providing premium plugins in addition to support is how we do that. We appreciate all our subscribers helping things to continue to run around here and for allowing us to provide base CB for free.