How to select dependent node with radius limit in hypermesh like simlab

I aim to create an RBE at the center of a surface, bounded by a limit circle, in HyperMesh's new interface.

I had done it in Simlab before, but I don't know how to do this in hypermesh (new interface).
Here is how to select the node on the surface with a limited radius and centroid with Simlab. 

Here is in hypermesh