You want to create your own RACI template.
Create a RACI shape in a template and create a shape sheet for each separate shape (R,A,C,I) with the user defined cell ”PhoenixObjectGUID” which should contain the GUID of the corresponding object.
Create a shape with the name RACI, the class with the name RACI already exists. If you place then separate objects of the class RACI (R, A, C, I) on a diagram, the RACI template will be created. In this way you can assign Function and Activity.