А где этот Tie tab? У меня нет такого. PCAD 2006 билд 19.02.9589 В хелпе прописано
1. Place a polygon on a signal layer. Give the polygon a unique shape to identify it as a copper tie.
2. Select the polygon and then right-click and choose Properties from the shortcut menu. The Polygon Properties dialog appears.
3. Click on the Tie tab.
4. Check the Copper Tie check box.
5. In the TieNet field, type a name for the copper tie.
6. Designate which nets should be connected to the Copper Tie, by transferring them from the Existing Nets list (which shows all the nets in the design) to the Tied To list. (Remember that there must be at least two nets in the Tied To list.
7. Click OK.