Small detail but I finally googled how to pick-walk through controls when you have offset and skd groups in the way ha. https://www.creativebloq.com/how-to/create-custom-rig-controls-in-maya
Select the controls you want to pick-walk through and hit 'Tag As Controller'. Then select the child control, then the parent control and hit 'Parent Controller'.
Select the controls you want to pick-walk through and hit 'Tag As Controller'. Then select the child control, then the parent control and hit 'Parent Controller'.