Basic example for setting a single and multiple frames time-line
Insert a cluster item, then add a window and video item to it. Before you check the Visible to set an item to show, make sure you displayed all projects item by clicking the "Schedule" stub in the main tab. And also check the "recording button" to begin recording.
Set your begin time by aligning the time bar, select video, and check the "Visible" to put a starting capsule. Select window and again check the "Visible" to put another starting capsule for window. Align the time bar to "10 seconds" and then un-check the "Visible". You will notice a "bar" and a second capsule to join up the "bar", you will also notice your "window window" is turn off. It means that the bar will represent the time period the window is shown.
Next, move the time bar to "15 seconds", check the "Visible", move the time bar to "20 seconds", un-check the "Visible". Now you have put 2 time frame period for window. That means, this window will display for 10 seconds, then hide for 5 seconds and then display for another 5 seconds.
Now, select the video, and move the time bar to 1 minute, un-check the "Visible". So, your video will have a minute time period.
Both window and video will play at the same time, because we assume they are shown at different part of your screen. If they are occupying the same area, just move the "bar" and align to the specific time to display.