As an instructor, you can manually add students to a group in both published and unpublished courses.
Note: In group assignments, all students should be assigned to groups before the assignment is published. Grades and submissions may be affected for students who were not in a group at the time of assignment submission but who were later added to a group.
Confirm you have created all the groups for this group set. If you need more groups, you can create additional groups manually.
Manually Assign via Drag and Drop
In the Unassigned Students section, find the student you want to add to a group . Click the student's name and drag it to the group .
Manually Assign via Add Icon
You can also click the student name Add icon  and select the group name .
Canvas will update the member count for that group to show the student has been added .
Continue to manually add students to groups until all students have been added.
To expand the group and view all group members, click the arrow icon next to the group name .
You can also move students between groups if necessary.