Releasing a Fixed Element

To release a fixed element:

Mark the element you want to release.
In the Edit menu, select Properties.
The Properties dialog box opens.
Select the Attributes tab.
In the Value column, double-click the field next to the Attachments entry.
The Attachments dialog box opens.
For the desired sides in the respective Attach type field, select none.
Click OK twice to close the dialog box.
The element is now free again at the selected sides.