Remove/Replace Skill

[Redjack]

So here is my quandary: I want to give a rouge arcane trickster the arcana skill as a class skill.

I thought to tackle this just like I tackled the replacing languages: Using personal adjustments, remove one, add one.

My issue is that I can't figure out how the "Personal Adjustment" "Proficiency" work when the adjustment is a negative number.
- Create a new character.
- Select race, any race. Human for my example.
- select class, any class. Rogue for my example
- select a background, any background. Acolyte for my example.
- Give the rogue the first three skill proficiencies on the list. Shows one left.
- Add a "Personal Adjustment" of "Proficiency". Set to -1.
- Proficiency tab now appears. Reports: Too many skill proficiencies (one over)!

From here, I can't seem to figure out the right combination to either reduce the rogue proficiencies or replace one of the list with arcana.

NOTE: Just to avoid options that will not resolve the specifics of my actual use case, here are more details. The player this will be used for already has a custom background with 2 skills not available to a starting rogue, so the resolution here must replace one of the rogue skills, not a manipulation of racial or background skills to allow for a proficiency in the arcana skill.

Thoughts?

[Mjolnirh]

you can just use the Proficient skill adjustment and select Arcana from the drop down, but that just adds the skill without taking one away

[Redjack]

Originally Posted by Mjolnirh

you can just use the Proficient skill adjustment and select Arcana from the drop down, but that just adds the skill without taking one away

What I would like to do is either:
- Allow arcana to be selected as a class skill
OR
- Add an arcana proficiency and reduce the class proficiency number by one.