This article explains how to require students to log in with Google or Microsoft in order to submit assignments and lessons in a particular folder.
Submission settings are defined on a folder level, so you will first need to navigate to the folder that contains the assignments and lessons to which you wish to apply these settings. Within this folder, click on the "Submission settings" button:
Next, ensure that the "Require login with Google or Microsoft" option is checked:
Next, make a note of the Join Code and provide this code to students:
In order to join the folder, students will need to first register with ZenGengo by visiting https://app.zengengo.com/student/register. After they have registered, they can join the folder by entering the Join Code on the student page: https://www.zengengo.com/student
Note that you, as a teacher, can register as a student with ZenGengo, but you will not be able to use the same Google or Microsoft credentials that you use for your teacher account.