The offset for the Quick Release attachment is 40mm. This value should be printed on the side of the adapter.
When using the Quick Release adapter, measure from the tip of the rod to the bottom of the receiver. Then, enter the value as a Vertical measurement, in SurvCE/PC.
If your are using a 2 meter rod the offset would be applied as follows:
(2 meters) + (40 mm) = 6.69291339 feet