Rather than entering grades for each individual student for each individual assessment, you may wish to enter grades for all students from one easy to use screen.
From the home screen, select Gradebook.
Select the desired class from the drop down menu.
Click the pencil icon located in the upper right hand corner of the gradebook table. This will take you to the Edit Gradebook screen.
Within the Edit Grade screen, you can enter or change the scores to each assessment, change the status of the assessment, or mark any adjustments to add or subtract points (for extra credit, late work, etc.).
If you would like to delete one of these assignments from the gradebook, here are a few articles that might help:
Unassign Assessments: Remove a Simple, Advanced, or Rubric Assessment from the gradebook
Manage Assignees: This article will walk you through the process of removing grades from individual students or an entire class).