Do you mean in one CC model/mesh? If so, yes. You can have multiple items (plushies or whatever) in the same mesh. But think about if you really need to combine them. Downloaders like to have flexibility and might prefer having them in separate .package files to use singly or combine as they wish.
OR rafii2198! Do you mean have them under one catalog thumbnail in game? So that people can choose another swatch and have another mesh to choose from?
If that's the case, you will have to go to the Object Catalog line in Studio, scroll down to the PrototypeID, copy that number and paste it inside that same line for your other plushie mod. When these numbers are the same for 2 different package files, they will both be stored under the same catalog thumbnail in buy mode.
Be sure to give each of them a different swatch color. Downside on this, people can't use the clone tool on them as they both use a different mesh. But I don't think that's that big of a problem. I've got the same "problem" when using a different tuning for other swatches. Just be sure to mention it to the people downloading your stuff.
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