Nouvel utilisateur CC

I don't believe you can, at least if your plan is as an individual. Adobe requires unique email addresses/IDs for each subscription, and only the subscriber is allowed to use the subscription plan. It cannot be shared between multiple users.

If you're talking about a subscription for a team of people, it can be done as long as you have enough licenses to add more people. If that's what you're talking about, I believe you need to talk to the Teams subscription sales team and they can help you convert an individual subscription to a team subscription.

Contact information is here: https://www.adobe.com/creativecloud/business/teams/plans.html