Most user friendly way to represent radio button with sub options

I'm working on a settings section where the user needs to pick a radio button (or a segmented control) and each option generates a set of multiple options that can be selected in any combination. Lets call the first "location" and the latter "panels"(that are available for each location).

My question is, if there is a more user friendly way of representing the multi selection dropdown (see images) and having the 2 controls grouped in a way their relation is metaphorically more obvious.

Thank you all in advance.

P.S The more relevant topic I could find is this one: Radio buttons menu with radio button submenu

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