Go into the "design-wide resource", on the "Analog" tab. On the right hand side, select the component you want to change, and open it tree. There you see the SAR ADC, right-click and 'relocate'.
The other signals you are seeing are the internal signals of the DelSig ADC - its actually also a component created from multiple building blocks. You should not mess with them (until you are absolutely sure you know what you are doing...)