Automatic Drill Down Based on Role Level Security

have an employee hierarchy table. I would like have a visual that drills down to thier level in the hierarchy automatically based on role level security. I think that this can be possible if I were to build a separate hierarchy with a "Level 1" that finds what level the user is in the employee hierarchy and gives that level in return. Then it would work down levels from there. 

My current hurdle is this, if I can ID the level in the employee hierarchy based off of username, how do I get this new "Level 1" and below levels to return that level in the employee hierarchy?