Within Otus, you may to edit groups that you have created within the platform.
Using the drop down, select the class you wish to view.
Select Assign Groups in the top right corner of the page.
Click the pencil icon next to any group that has a solid colored circle next to the title. Solid colored circles indicate a group that you have created within your Teacher account. Half-colored circles represent district groups and are only editable by administrative users.
Edit title of the group and edit the color from the list. When satisfied, select Add.