cadence virtuoso , 1, need to know how can i remove the physical binding(devices) of a layout, 2, depend on the connectivity can we change the binding of devices , once we clear the physical binding??

HI All,

1, I need to know how can i remove the physical binding(devices) of a layout??

2,Once we clear the physical binding, by connectivity can I update the device correspondence as schematic or is ther any way to update the physical binding(binding option should work i feel)??

Kindly Guide me.