 So you just love inflation. Not a problem. Face inflate just allows you to left click drag to expand to shape. This functions extremely similar to the inflate brush but instead it gets applied to whatever target you have. So if we have targets set to polygroup island it's only going to apply inflation to the polygons that are the same color as the face we click. There are three different options. The first one is face normals which will inflate in the direction the faces are oriented. The next target is edge normal which extrudes in the direction that the edges are oriented. And the last target is point normal which extrudes in the direction that the points are oriented. They give you slightly different results. But hope that helps and as always hope you have a fantastic day and I'll see you around.