Are focus powers (occultist) spell like abilities or supernatural abilities. Do they need concentration?
The ones with (Su) after the name are Supernatural Abilities, and the ones with (Sp) after the name are Spell-Like Abilities. For completeness, abilities with (Ex) after the name (like Magic Item Skill) are Extraordinary Abilities, but no Focus Powers are in that category.
I'm not sure what you mean regarding 'needing concentration.'
Ah ..... yes. Slow face palm. I should have seen the obvious small brackets. The concentration was if it was indeterminate so it is a moot point.