Teachers have the ability to link their Google Drive to their Classroom accounts which allows them to create and link Google files to assignments for students to submit via PupilPath. You can find instructions detailing for you link your Google Drive here Link and Manage My Google Domain.
Required submissions are assignments that require students to submit work to gain credit. To create a required submission you must create an assignment. To create an assignment click Assignments>Create Assignments. You can find more details on creating assignments here How to Create Assignments.
From the Create Assignment page enter the assignment details then click the Attach file as drop down and select Required Submission.
For Google assignments you have two options, Google Files and New Google File. Google Files allows you to select from existing documents in your Google Drive. New Google File allows you to create a new file for the assignment.
There are three options when creating a New Google File. Document, Spreadsheet or Presentation. Once a file type is selected, the new file will open in a window for you to edit. Once you have completed setting up the file close the window.
When the window is closed the file will be displayed under Required submissions. You can also check the box to allow uploads if you want students to submit a non Google file.
You can link the assignment to additional courses and click Save Assignment.
You can find instructions detailing how to view student submissions here How to View Student Submissions.
You can also find instructions detailing how students submit work here How to Submit Student Work in PupilPath.