ok, for a friend on here...
Start by installing cams, cambelt etc.
Find Crank TDC (using a pin in the #1 sparkplug hole method) - turn crank one direction till it hits stopper in sparkplug hole, turn other way till it hits stopper, divide the difference to find actual crank TDC. mark this on cambelt cover or something. reset your degreewheel (on crank pulley) so it now points to true TDC.
now, you need to find the CentreLine (CL) of your first cam. Using a dial indicator on a solid base, so it is measuring the #1 cam lobe, turn one direction to, say 0.500 lift, record what it reads on your degree wheel - now turn the other direction to the same lift (0.500 say) record the reading on the degree wheel - divide the difference and you have the CL of the cam. This should be around what your lobe CL is for the cam, but may be a few degrees out.
Now this is where you use the camwheel to adjust the cam forward or backward to set the cam on it's correct CL.
Rinse and repeat for the other camshaft....
here is a useless and pokey drawing I did to illustrate....
enjoy!