Can I hide the Attendance Taker but still keep it running?

Yes. The Attendance Taker needs to be open in each meeting but it can be minimized so it not in the way.

Open the Attendance Taker app in each meeting where you'd like to take attendance, and it needs to stay open throughout the entire meeting to successfully generate your attendance report. You can also select "Auto-open in Meetings" so you don't need to remember to open the App every time.

Once the App has been opened, it can be minimized. If you find the apps sidebar distracting, you can click the three dot button in the top right and select "pop out," so the Attendance Taker opens in a separate dialog box. You can then minimize the Attendance Taker while your Zoom meeting runs: