Within the Wakfu interface (default shortcut: w), there are up to 6 flasks. Each shows indicators for Céréales, Plantes , and Arbres, and up to 3 Famille de Monstre. For Zone marchande , none may be present.
However, Clan Member will only concern themselves with 1 to 3 of those types. This is indicated by bars shown on the relevant flask or a small indicator below each flask. The Volontés des Membres de Clan is that the level of each population is between these bars, no higher, no lower. The Clan Member's Will can also be found in the little indicator located below each flask.