I don’t have definitive answers to your questions, but here’s some suggestions, experience and information.

1. Be sure to list your name first when buying the pass — that may work better when trying to use it alone.
2. While I think that technically you need to have everybody and their passport lined up when you get a railpass validated, I’ve never had a situation where that actually happened. They just asked to see my passport and validated the pass.
3. With the eurail saver pass, you get one pass. I think the names and passport numbers are actually listed on a "control voucher" that is attached. I assume it’s the same (just 1 pass) with the German Twin pass. Britrail was separate passes. Weirdly, one just had my name on it. The other two each listed another name and said "valid only with" my pass — so I could use my pass alone, or with one of the others, or with both of the others, but neither of the others could travel without me.
4. I once asked the "what does traveling together really mean" question about eurail passes on one of the railpass sites. The answer was that one person could use the pass alone — but that the other would have no pass to use for that day.

You might try the "contact us" e-mail at whatever railpass website you’re using. I’ve had good luck getting answers at railpass.com/new

Thanks for the quick response . I sent off an e-mail to railpass yesterday .Judging from your post it sounds like I have a pretty good chance of making this work for me .

Has anyone else had experince with validating with only one person present ?

Chad:

Just found this at ricksteves.com

quote:Saverpass: Designed to save money for groups, a Saverpass is a single ticket printed with all the names of two to five travelers. Members of each pair or group must order the same pass together and all must be present to validate the pass in Europe. Part of the group can use the pass while others stay in town or fly home early, but those sharing a pass cannot split and go different directions by train. If you are a group of four, you can give yourselves more flexibility by ordering a separate pass for each pair. On our website, add a pass for one pair to your shopping cart, then use the "Continue Shopping" button to add more passes to the same order. By fax, simply indicate which people will travel together. (It’s OK to split payment for one order onto multiple credit cards.) Some passes offer a "Twin" discount that works the same way, but with only two people listed on each pass.

Thanks for the info . I am still a little unsure what to do .I sent an e-mail to railpass last week and never received any reply .I was really hoping to hear from some other travelers who had validated with only one person present before I bought a 9 day pass .

Thanks again