Labels Activation

So each Label has to be pre-assigned before it can be used?  I saw Labels in the Forms module... I guess I better stick with Categories then. I need to avoid complications and redundancies. I thought labels were like hashtags in Twitter - created on the fly.

Yes, I agree with you about the redundancies, but they can come in addition. For example, I only use them for profiles, to define interests, so a member interested in astronomy can easily find other members with the same interest. I could have done with the categories, but the presentation is different and I think it is better in this case.

and see my explanations above. in this example, add the list in the person module parameters, add the labels field to the profiles. Me I rename in "tags" I find is better.