Select Anchor from either the Insert or Modify menu to display the Anchor dialog. Anchors may be added or modified at any point; however, only one anchor may be defined at a single point.
Item #1: Available AutoPIPE online Help Example Methods for Modeling Anchors with related FAQ's.
Item #2: How many supports at 1 node point constitutes an anchor?
Item #3: Is this considered an anchor?
Item #4: Model anchor using Local coordinate
Modeling Approaches in AutoPIPE
Bentley AutoPIPE