To assign a child to a parent (for example, to assign a lesson to a course or a slide to a specimen) do the following:
On the list (table or folder view) page for the parent data, select the check box beside the child you want to assign to a parent.
Click Assign. A selection box will appear beside the Assign link.
From the selection list, choose either Assign to Existing or Assign to New.
When the Select to Assign To page appears, you will see a listing of all available parents with a thumbnail if one is available. If the list is long, you can narrow the results by selecting one of the possible filters listed directly above the list.
From the final list of results, click Assign beside any items you wish to assign the child data to.