\item Click on the new mixer window to make sure it is highlighted with a white border. This designates it as the \textit{in use} mixer viewer.
\item Set your play to the beginning of the video using the \textit{Home} key or \textit{Home} transport button.
\item In the patchbay for a video track click on the \textit{mixer} arrow on the expanded $2^{nd}$ line which is a right facing arrow. Now the arrow will point up. If there are audio tracks with that video, click on each of its audio tracks \textit{mixer} arrow until they point up also.
\item Click on the new mixer window to make sure it is highlighted with a white border. This designates it as the \textit{in use} mixer viewer.
\item Set your play to the beginning of the video using the \textit{Home} key or \textit{Home} transport button.
\item In the patchbay for a video track click on the \textit{mixer} arrow on the expanded $2^{nd}$ line which is a right facing arrow. Now the arrow will point up. If there are audio tracks with that video, click on each of its audio tracks \textit{mixer} arrow until they point up also.