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="http://ee.mweda.com/uploadfile/2020/0326/20200326071021460.jpg"><img src="../imgqa/eboard/EM/EM-whs034eodcf.jpg" alt="1.jpg" /></a><a title="2.jpg" href="http://ee.mweda.com/uploadfile/2020/0326/20200326071024313.jpg"><img src="../imgqa/eboard/EM/EM-5pb4xxsrwg1.jpg" alt="2.jpg" /></a><a title="3.jpg" href="http://ee.mweda.com/uploadfile/2020/0326/20200326071026737.jpg"><img src="../imgqa/eboard/EM/EM-jos5pnsx5w3.jpg" alt="3.jpg" /></a>

http://ee.mweda.com/uploadfile/2020/0326/20200326071021460.jpg
http://ee.mweda.com/uploadfile/2020/0326/20200326071024313.jpg
http://ee.mweda.com/uploadfile/2020/0326/20200326071026737.jpg