As per your scenarios following is the solution.
1. You can show separate Overall satisfaction and turn over rate
by putting the dimension Program in Pages Shelf.
2. You can Change the name of overall survey 2017 to ‘’Overall Staff Satisfaction’’
by option Edit alias.
3. You can place the Year Dimension in Filter Pane and select the specified Year.
4. For Trend Line the Date Field Should be in Time Series .
Book8 (1).twbx 61.3 KB
Prettymuch helpful to give me idea