To add a highlight overlay to your video you first seek to where you want to start the overlay. Then click the "Tools" menu button above the timeline and select "Overlay" and then the "Highlight" option or you can press the "O" key and then the "H" key. You can drag and resize the highlight to position it over the part of your recording that you'd like to highlight. You can also fine tune the position by holding down the Ctrl key (or Command key on the Mac) and then pressing the arrow keys to nudge the overlay around the video. Once you have the highlight positioned you can also choose to zoom the highlighted area by pressing the "Add Zoom" button then you can make the highlighted section larger by dragging the corners and you can drag the center to reposition it anywhere on your recording. If you want to remove the zoom so you can readjust the highlighted area you can click the "Remove Zoom" button. You can set some style properties for the overlay using the Style button. You can choose the color to overlay for dimming out the non-highlighted area. You can choose how much of the non-highlighted area should show through the dimming by adjusting the Opacity. You can choose if you'd like to apply a blur to the non-highlighted area You can choose the Shape to use for the highlight. You can also choose a shadow option for the highlight. You can reuse style settings by clicking this button which will show a list of previous styles you used so you can easily switch back to a particular style combination. By default the overlay will have a transtion to fade in and out. You can edit the transition in or out by clicking these buttons. You can choose to fade, or have no transition. To choose the section of video your overlay appears over you can drag these bars over the timeline to select the start and end point. You can also jump the start point to your current seek point by clicking the "S" key. Or jump the end point to your current seek point by clicking the "E" key. Its also possible to animate the overlay so it changes over time but we'll cover that in another tutorial. You can preview your overlay by pressing the Preview button which will seek right before the overlay start then play through it and stop shortly after the overlay is done. Once you're ready to commit you press the OK button or the Enter key Anytime you make a change to the recording it is automatically saved on your computer. After the overlay is added a colored span will show where the overlay shows on the timeline. If you want to later edit the overlay you can seek back to that spot on the timeline then click this icon which will bring you back to the overlay controls. And you can remove the overlay by clicking this icon. Or you can also use the undo or edit history drop down to go back in time before you added the overlay. The last used tool will be listed next to the Tools button above the timeline so you can easily use the same tool again by clicking on it here.