Where to submit luggage

Please give me information where to submit Luggage to tranfer zermatt in zurich airport or zurich HB?

If you fly into Zurich Airport you can check your luggage at your home airport. Buy and attach one of the Swiss Luggage tags to each piece of luggage you wish to check. At Zurich the luggage is pulled right off the plane and taken to the rail station. The first time you will see it will be in Zermatt.
If you want to check it in either Zurich airport or Zurich Hbf (main station) take it to the baggage window. These are well marked and are not to far from the ticket windows.

I will fly biz class on Swiss Airlines from San Francisco to Zurich in two weeks. I'd like to send one piece of luggage on to Lausanne where I'll be working nine days after I arrive in Switzerland. The first eight days my husband and I are traveling in Switzerland. Will the Fly Rail Baggage send the baggage to Lausanne station and hold it for nine days?
Also, do I just buy the green luggage tag from sbb.com?
Is it better to retrieve the luggage in Zurich then check it through the Fly Rail service or can I trust it to be sent all the way from San Francisco?
Thanks for your help.