Round multiple surfaces

I'm trying to create a round using multiple surfaces. I can't find how to do it.

I need to do something similar to this:

19-Tanzanite

I think that the (surface) fillet concept does not exist in Creo.

You can get a similar result in a different way. Surfaces to be "filleted":

by first merging your surfaces:

thus creating the sharp edge, which you can then round over:

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