Install the
Community Pack. Then open your character and press CTRL-K then turn on "
ShadowChemosh's Adjustments" option. Then go to the
Adjust tab and add a
Conferred Ability Adjustment. Look for "
Magus: Arcane Pool" and add it.
Now you have a new Arcane Pool ability on the In-Play tab that will let you select a weapon and an enhancement ability. When activated it will apply that enhancement to the selected weapon.