Starting Sage

[Jeeqbit]

No matter how much I read about how the class skills are intended to operate, it was just too overwhelming.

Spoiler: Sage is a clone of Scholar.

I recommend typing these commands:
/hotbar copy SCH 1 SGE 1
/hotbar copy SCH 2 SGE 2
/hotbar copy SCH 3 SGE 3
/hotbar copy SCH 4 SGE 4
/hotbar copy SCH 5 SGE 5
/hotbar copy SCH 6 SGE 6
/hotbar copy SCH 7 SGE 7
/hotbar copy SCH 8 SGE 8
/hotbar copy SCH 9 SGE 9
/hotbar copy SCH 10 SGE 10

Then press P to open Actions & Traits and drag Sage's version of the same abilities onto the place where you have Scholar's version.

There are a few things different. In particular, in order to use the DoT (like Scholar's Bio), you must first use Eukrasia and then the single-target attack (Dosis). In order to use a shield, you must first use Eukrasia, then the cure/physic spell (Diagnosis).