Just create a second (free) account and invite it to your meeting on a
separate PC. If you do not have two devices you can use the App for one
account and a web browser for the second.
Going off the information Bort provided your user account does not
possess the audio-conferencing add-on that is needed for this
functionality. You will need to contact your account admin and request
access to the additional service.
It depends on whether or not your account has the feature enabled.
Please read the section about "Launching a Poll" in it, there are
instructions for downloading the results while still in the meeting.
