Find Course Groups (Instructor View)
In an ultra-style course site, instructors will find Course Groups under Details & Actions, near the top of the list.

Add a Group Set
The process of creating groups in Blackboard begins by creating a group set, even if you're creating a single group.
You'll choose an enrollment style for the groups:
Manually Assign if you'll be enrolling students yourself.
Automatically Assign if you want Blackboard to randomize the groups.
Self-Enroll if the students will be adding themselves.
Import from CSV if you have a set of groups in an appropriately formatted comma separated values (CSV) file that you'll be using to create groups.
To set this up, go to your course's Groups tab and click the NEW GROUP SET button in the upper right. Then choose your enrollment style.

The Manually Assign Groups page covers settings and properties that to all groups and is most broadly useful.
The Self-Enroll Groups page covers the first step when creating a Self-Enroll Group set.
The Automatically Assign Groups page covers the first step when creating a Automatically Assign Group set.
Add Groups to a Group Set
To add groups to the set, click the ADD GROUP button in the top-middle. You can add a single group, in which case you'll be prompted to enter a group name and description, or you can add multiple groups, in which case you'll be prompted to enter the number of groups you wish to add. If you add multiple groups, they'll be named "Group 1", "Group 2", etc.

Add a Student to a Group
To add a student to an existing group, such as adding a new enrollee into a CETL-created merge group, you'll first need to navigate to the GROUPS section of your course.

The Groups page defaults to a list of all the group sets in your course. Locate the group set that has enrollments you need to manage (the CETL CETL-created merge group set is called Sections). Click the more button on the right of the set in question and choose Edit.

The left side of the groups page lists all the folks in the class who are not members of a group in this set. To add those folks to a group, check the box left of their name, then click the "+Assign Here" button on the group you wish to add them to (the "+Add Members" button gets replaced with "Assign Here").

OR you can click the ADD MEMBERS button on the group lets you select members to add and select names there.
OR you can go to the Group Settings page (see EDIT GROUP NAME AND DESCRIPTION above) and add members there.
View / Remove Group Members
You can view the members by clicking the Expand Details button in the lower right of the group box, or by going to the Group Settings page.

You can remove an individual from either of these lists by clicking the remove member icon (a person with an arrow) on the right. To remove more than one member, you can check the boxes for the members you wish to remove, then click the remove member button for any one of the folks you've selected.

To remove all group members, click the Unassign All Members button in the top-right of the group (next to the "..." button)

Finally, click SAVE at the bottom of the page to save your changes.