There are 14 icons in total.  The first 10 are availability icons which help you decide who can work during a shift.  They are:

 

  The employees' availablility shows they can work that time block and haven't any conflicts

  The employee is available to work but this is not their primary role

  The employees' availability shows they cannot work that time block

  The employees' availability shows they can work but not the whole time block

  The employee is already working this shift or time block on this schedule

  The employee is already working another time block on this schedule today

  The employee is already working on another schedule in a different time block

  The employee is already working on another schedule in a corresponding time block

  The employee is on vacation 

  The employee cannot work this shift because of timing issues related to business rules i.e. cannot work more than 12 hours within a 24 hour period


 

The 4 icons below reflect credential standings.

 

  The employee has a credential that will expire within 180 days

  The employee has a credential that will expire within 30 days

  The employee has a credential that will expire within 14 days, has expired or is missing

  The employees' credentials are current