Let's say you imported a whole bunch of people. After the import, you realize that you should have imported them into a group. No problem. Here's how.
Step 1
Click on Groups.
Step 2
Click on Import History.
Step 3
Locate the import you wish to work with.
Step 4
Click on the first person you wish to move to the group.
Step 5
Then click on Partial Visible.
Step 6
It will turn into All Visible and select everyone.
Step 7
Click on More.
Step 8
Click on More.
Step 9
Click on Copy to Group.
Step 10
In the pop-up box, choose the group to which you wish to add these people. Then click on Confirm to complete your action.