I am a relatively new manager and I have to visit one of my under performing store locations. Due to a lack of consistent leadership the staff at this location is not meeting the standards of my company and I need to evaluate which staff are "A" vs. "B" players. We are already cutting hours for the clear bottom performers but I want to meet the staff myself and make sure that who the manager says is their "top performers " or "a players" meet my standards. Any suggestions for how to best accomplish this? It's a young group and I don't want it to be obvious that I'm there to observe and evaluate. Should I meet one on one with each employee and ask them some formal or informal questions? Should I stand back and observe them as they complete their tasks etc? Any advice is welcome for on site visits!