This Golden Software video covers how to add fit curves to your graph, and then edit the properties of those fit curves. Specifically, this video addresses:

1. Adding a predefined fit - 0:15
2. Plotting a function of Y fit (X=F(Y)) - 0:40
3. Adding a custom fit - 1:00
4. Editing fit curve display properties - 2:12
5. Adding a confidence interval - 2:58 
6. Limiting the fit curve - 3:32
7. Displaying and Export fit curve statistics - 5:22