Wizard's Convention

The Wizard's Convention is an event attended by sorcerers in the Smurfs cartoon show.

Mainstream Smurfs Media
In the episode "The Winged Wizard", Gargamel was denied admittance to the convention by its host due to the lack of evidence of his claims of the Smurfs' existence (although that may have been just a convenient excuse, as it is obvious that Gargamel is not held in high esteem by his colleagues).

In "Smurfing For Ghosts", though, Papa Smurf had attended the event along with Selwyn and Tallulah just as Peewit was seeking his assistance in getting rid of Uncle Fenwick's relatives in Quarrel Castle. In "Gargamel's Time Trip", we learn that Father Time himself apparently attends the event, if only on an occasional basis, because he reports to Papa Smurf that all the wizards were in attendance "except, of course, that so-called wizard Gargamel".