Applying texture to OBJ primitive.

[Cleverpanda]

Hello.
I have a simple model that is just the pyramid primitive, and I want to to apply two 16x16 images to it. one called "side" that is copied to all 4 pyramid sides, and a "base" that is the base.

I can't even manage to see how to use any texture at all with this model form, it only seems to let me paint it solid colors. Additionally, if I paint each face manually, it puts all of the faces in a net in one single image which is not what I want. I'd like all of the sides to use one image. The default image is also too small by a factor of 4.

Is this possible with Cubik Pro, and if so how can I do it?
Thanks

[Cleverpanda]

I found how to enable textures in settings, but it is still applying one texture to the entire model and is doing so where the pixles are huge, and only allows me one image