CST creation of face lumped elements.

I would like to create a face lumped elements. But i am unable to do so. Any advice?
Please refer to the pictures.
1. The whole structure.
2. The place where i want to create the face lumped elements.
3. Should be similar to the face discrete port which i have create.

<a title="1.jpg" href="../imgqa/eboard/EM/EM-pnqvhwkhhox.jpg"><img src="../imgqa/eboard/EM/EM-pnqvhwkhhox.jpg" alt="1.jpg" /></a><a title="2.jpg" href="../imgqa/eboard/EM/EM-mxlh1cmydkk.jpg"><img src="../imgqa/eboard/EM/EM-mxlh1cmydkk.jpg" alt="2.jpg" /></a><a title="3.jpg" href="../imgqa/eboard/EM/EM-4sk3ji3rzhp.jpg"><img src="../imgqa/eboard/EM/EM-4sk3ji3rzhp.jpg" alt="3.jpg" /></a>

http://obrazki.elektroda.pl/5930853100_1350626184.jpg
http://obrazki.elektroda.pl/5660989100_1350626184.jpg
http://obrazki.elektroda.pl/8840151400_1350626185.jpg