1. Open the Synthetics View.
2. In the View tab, toggle on Vp Track.
3. Select curves Well Elastic Logs, Checkshot Vintt and Vel Model.  
4. Insight will display the following:
   • sonic log selected in well as P Slowness
   • active checkshots in the selected well
   • the velocity model: Displaying the Velocity Model Curve
5. Right-click on the VP track and display the legend for easy comparison.

Note: You can even display the drift curve in the adjacent track!

There's a whole chapter in our manual on Synthetics. Be sure to take a look if you want to get the most out of it!