How to assign non modal to an object in HFSS

After running the simulation, I want to test the effect of some objects in my design, so I want to assign an object each a time to a non model and then run the simulation. How I can do this, please? I know how to put a non model object using "Modeler >> New object type", but I want to assign the old objects now not the new one.

Select the object in the view area, or double-click the item in the left-hand tree list. There's an object property called "Model", which is accompanied by a check box. Unchecking the box makes the object non-model.