Joining Elements Together

To fix an element to other elements:

Mark the element you want to fix.
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 side in the Attach type field, select To widget. You can fix more than one side of the element to different elements.
Select the desired element in the respective To widget field.
In the respective Offset field, adjust the distance between the two elements.
Click OK twice to close the dialog box.
The element is now fixed with the selected sides to the other selected elements.