Talk:Focus/@comment-79.225.51.41-20160516155434/@comment-26490685-20160723122726

Your focus Pool works in the same way that mod Capacity does for warframes, weapons, etc.

Just like how equipping mods uses up the available Capacity on your equipment (i.e. installing a max rank Vitality mod costs 12 points of your warframe's Capacity points), activating Ways in a focus tree uses up points from the Pool.

Unlocking a Way (which you only need to do one time, ever) in and of itself does not use up points from the Pool, only activating them does. However, when it comes to unlocking, I have noticed that you do need to have no fewer than the number of Pool points required to activate that Way (unranked) available.

Using the Naramon tree that you mentioned as an example, let's say that you have a Pool of 8 points in that tree, and you have both the base "Mind Spike" that you start with and the "Mind Spike Mastery" Way both leveled up to Max Rank. Next, you want to unlock the "Strategic Execution" Way, but run into a problem--since both "Mind Spike" and "Mind Spike Mastery" use 4 Pool points each, you have 0/8 Pool capacity left and it won't let you unlock it because you do not have enough Pool points available! In this situation, you don't actually need to invest in any more Pool points just to unlock another Way--it turns out that if you just deactivate "Mind Spike Mastery", your available Pool changes to 4/8, and it will allow you to unlock "Strategic Execution". Once it's unlocked, though, the new Way does not need to be activated, and you can go ahead and re-activate "Mind Spike Mastery" again!