# How can I group into one layer all similar items?

I'd like to get all of my spheres (x.003, x.004, x.005, etc...) into a group called "Sphere" (the first one in the list).

Something like that:

Cylinder
Cylinder.001
Sphere
Sphere.001
Sphere.002
Sphere.003
Sphere.004
Sphere.005


Can someone explain me how to order them?