A low wing type plane needs to be inverted(wing on the upper half
of the fuse while sitting on what ever balancer you have.) to balance
for CG. Then just follow your manuels suggested balance point... You
can move on board equip. around to attain the correct CG for the
first flight, then move again if you want to experiment with different
CG settings for different flight characteristics. Sometimes you have to
add some weight... But it's best if you can get what you need by
moving equip. around...
It's also good to balance the model laterally(wing tip to tip).. But for
trainer type it's not really needed.... But I do all my planes anyway...