Label2 and the second text part
Label2 is similar to Label1, except that its top edge might need to be adjusted if Label1 grows vertically. To accommodate this, attach Label2's top edge to Label1's bottom edge, using an offset of 10. 
Edge 
Attachment 
Top 
Attachment type: XmATTACHWIDGET 
Offset: 10 
Attached parts: Label1 
Bottom 
Attachment type: XmATTACHNONE 
Left 
Attachment type: XmATTACHFORM 
Offset: 10 
Right 
Attachment type: XmATTACHNONE 
For the text part to the right of Label2, use the same settings as for the previous text part, except attach it to Label2. 
Edge 
Attachment 
Top 
Attachment type: XmATTACHOPPOSITEWIDGET 
Offset: 0 
Attached parts: Label2 
Bottom 
Attachment type: XmATTACHNONE 
Left 
Attachment type: XmATTACHWIDGET 
Offset: 10 
Attached parts: Label2 
Right 
Attachment type: XmATTACHFORM 
Offset: 10 
Last modified date: 01/29/2015