[Alneyan]

And likewise, if you have more research points at your disporal, you will spend more than 20 points per turn in this particular school. It would be more like "You shall dedicate half your efforts researching Conjuration spells, and split evenly the rest of your time between Blood Magic and Evocation" than "You spend 20 points in Conjuration, 10 points in Blood Magic and Evocation".

But it would be useful nevertheless, for a single turn or to plan your researches in the long run.