Yes. There are several methods...
Use STORYBOOK mode. Place the scrubber (red line) where you want the freeze to occur and click the SPLIT button.
Under the preview window click the |> NEXT FRAME icon. SPLIT once again.
Right-click the middle of the three clips now shown and CHANGE CLIP SPEED to zero.
Click the time readout (below the FX and speaker buttons) and set the duration of the freeze, after which the video will continue.
Or use Nat's method. Place the scrubber where you want the freeze and take a snapshot.. Don't move the scrubber. The snapshot will be in the IMAGES bin.
To the right of the PLACE button, the chevron can be clicked to choose the appropriate resolution. Then click PLACE to insert the still. Set its duration.