You can insert a pause in your video which will freeze the audio and video for a certain amount of time. For example if we wanted to insert a pause at this point in the video then we can press the "Tools" button above the timeline then select the "Insert" and "Pause" option. Or you can click the "I" key and then the "P" key. Now you can select the length of pause by pressing the up and down arrows and you can prevew what the pause looks like by pressing the Preview button which will seek right before the pause and start playing then stop shortly after the pause. If you aren't at the right spot you can drag the blue bar or use the arrow keys to nudge the bar along the timeline. One more tip about positioning. If you click off the blue bar to find your spot, you can reposition the pause point to that spot by pressing the "S" key. Once you are positioned in the right spot you can click OK or press Enter and your pause will be saved. Anytime you make a change to the recording it is automatically saved on your computer. After the pause is added a colored span will show on the timeline showing where the pause happens. If you want to remove the pause you can seek back to that spot on the timeline then click this icon which will bring up a menu with another icon you can press to remove the pause or you can increase or decrease the pause using the arrows. You can also use the undo or edit history drop down to go back in time before you added the edit if you'd like to remove it. 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.