LabWare Familiarization

In the attached slide my screen is divided in two parts.  On the right hand side are my steps and the left hand side would be the content to share.

1. Input – Lot Management should appear first. This allows the facilitator to talk and introduce that step.  When the facilitator decides the arrow with number one will appear pointing to the Input - Lot Management.  Nothing else on the right should be visible or the other numbers can be grayed out until the facilitator decides to move on.  
2. Interfaces - when the facilitator goes to step two, step one disappears or  fades out, the arrow with number 0ne disappears or fades out. When the facilitator decides to go on - the arrow with number two should appear.

Note: This should happen for each step (1 - 4 with sub-steps).  I think the arrows with the number should disappear - otherwise there will be too many arrows on the screen.