How to separate the object to smaller units to give different materials to the different parts? I have been trying to create a closet in Blender 2.8 and giving materials to the frame, the doors and the handles, but whenever I try to assign a material for example to certain doors, the whole object got selected. My first idea was to use &quot;Mark Seam&quot; to use it as &quot;boundary&quot; of the different materials, but it didn't work, then I used key P to make separations in the object, but it - although separates the object by selection - still didn't work, it keeps using the whole obejct. Can anyone please help me? Thank you.
Materials are assigned on a per-face basis. You can think of assignment to an object as a convenience function: 'Assign to all faces in the object's mesh'.
Assign to individual faces in Edit Mode. Add slots using the '+' sign next to the material slots panel. Select or create materials to occupy the slots.

Select the slot. Select the faces. Hit 'Assign'.