Help with magus arcane points
 

I don't see any way to spend my arcane points and add enhancement bonuses and/or abilities to my weapon. How do I go about doing this?

You can subtract pool points on the in-play tab, and then go to the weapon you're enhancing, open it up and alter as needed. Some people keep extra copies of their weapons with their favorite configurations, and just switch between to save time.

Any suggestions for doing it with a Black Blade for a bladebound magus that can't be edited like that?

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.

Awesome, that's basically what I was looking for. Are there similar options for a warpriest's sacred armor/weapon and an Occultist's transmutation legacy weapon ability?

You deserve massive kudos for this option which works great. Any chance of making similar adjustments for the Paladin's Divine Weapon Bond or like abilities?

I have nothing created for Paladins or War Priest at this time sorry... :(

Maybe LazarX could write them and them submit them for the community package.