A pushpin is a user-placed control that provides a quick way to allow or prevent changes to an element’s position.
After you place a pushpin, you cannot move the element until you unpin it (by clicking the pushpin control). When the element is unpinned, a red X displays on the control. After moving the element, you can click the control again to pin the element to its new position.
Note: When multiple pinned elements are selected select pushpins may not be displayed. To display pushpins in the model, Click Modify|Multi-Select tab
Selection panel
(Activate Controls). Click again to hide the pushpins in the model.
Selection panel
(Activate Controls). Click again to hide the pushpins in the model.
Example

Pushpin control on a locked component
Structural Example

Pushpin controls on locked components
