How to show / edit and delete constraints in advanced sample project

[DGRL]

Dear forum members

After 15 years of using AutoCAD I am moving on using Revit Structure (2016)

When viewing this project and off course also try to edit it I am struggling with constraints

When edit a family (see pic 1) I press the button Reveal constraints I don't see any constraints at all (PIC 2)

But when I edit / move 1 line of the family I get error Constraints are not satisfied

Why in the world are the constraints ( that I cant even see ) not satisfied?
How can I show the constraints?
How can I edit them?

The help file was not use full at all on this part

Kind regards,

[Revit_Whisperer]

If you open the family and in the view shown in image 1 type in VG, turn on the annotation category and you will be able to see that the lines are tied to parameters which are some of the constraints it is talking about.  You will notice when I select the bottom chord you can see that it is locked to reference planes.