Thomsch The Microsoft Forms can be used with people outside of the Organisation I have many Students that fill out questionnaires that have been created using Forms the problem is how the Forms are delivered to the Students.
At the moment if you are running a Channel for the Meeting the Form shows in the Channel Chat and not the Video Meeting so the end-user has to switch back to the Channel chat to complete the Form, UNLIKE a non-Channel Meeting where you can Launch the Quiz/Poll and it shows Centre screen of the end-user.
Also, you have to open Microsoft Forms then View all Forms then find the one you created for the Question then open it and export the results then show the created .CSV in excel just to find out who clicked on what.
In the Non-Channel Poll, you simply click export results and open it in Excel so you can see the difference in how it has been implemented for Channel and Non-Channel meetings, Its hard enough getting Teachers to use new Technology but when Microsoft make multiple versions of doing the same thing and expect everyone to just understand is a bit silly, to be honest.