How is the forecast profile tied to the article master?

Hello-

I understand how to create a forecast profile, but I assume there is some way to assign that profile to articles or material groups, and I cannot figure that out. If it is assigned, it will show on the article master in the right field, but it cannot be changed or maintained in the article master directly. So, there must be another method to link/assign these outside of the article master.

Any help is appreciated.

Thanks-

Brady