A customer has technicians with varying degrees of training to perform installation work.
Their current corresponding skill levels are:

For activities that require expert technicians, there is already an "Installation" work skill in place to identify those high visibility activities and enforce that assignment rule.
However, another segment of mid-tier installation activities must be assigned to technicians that are at least novices, but even better if they are considered fully qualified.
Which configuration satisfies the requirement of assigning those mid-tier installation activities?