How to ‘Hand In’ an assignment in UC/Class Pages?

How to ‘Hand In’ to an assignment in UC/Class Pages? 

Where available, please Hand In using "Recent Assignment" block in UC - Guide below.

How to 'Hand In' an assignment using "Recent Assignment" block in UC?

To use this 'Hand In' method your teachers must create Assignments in UC (global creator).

To "Hand In" a Google Doc Assignment natively in UC: