Many Data Definitions contain groups of fields that can be proliferated / repeated / multiplied to suit your content needs. These groups can be identified by the plus button in the group title bar.
This button is labeled for screen readers as Add new group.
For example, a Data Definition may include a field group for defining a link. Need more than one link? Click the plus button and Cascade creates an additional link group for you below the current one.
When new groups are created, additional buttons will appear in the group title bar.
Reordering groups
Use the up- and down-arrow buttons to reorder your groups.
These buttons are labeled for screen readers as Move up and Move down, respectively.
Deleting groups
Use the X button to delete / remove a group.
This button is labeled for screen readers as Remove.