How do I post a review of a session with two ladies so that it appears for both with their information? I just did my first double review but not sure I did it correctly.

But they had a TER profile set up together as a team. That's the main reason I didn't review the others I had.

you can create one.  Use both their names, use both their websites.  You should note in the general details which provider you are using to fill in the profile.

Use both names with an "and" between.
You can put both ladies websites and ads, in the appropriate places. You should also be able to post 2 email addresses and two phone numbers. The rest of the profile (description and services) only allow for one. Decide which one you will describe.
In the General details you can start by saying "Description in the profile is for provider A. Provider B is...."
Review of Suzy and Sally:
The description in the profile above is for Suzy. Sally is a little shorter and thinner, with long straight brown hair and Small natural perky breasts...

Like Swim and P'storm said, use an "and" (not an &) between their names. That makes it easier for others to search for doubles. Just search "and" in the name field

The review system is not perfect for reviewing doubles.  The key advice was given above.  Use and between their names, use both websites, numbers, emails, etc.  When it comes to the drop downs just select one and be consistent.  In the review be clear about both girls.

The websites always seem to an issue when one part of the duo does not have one.  

I did a double with you and a friend, Drew. It was in January. You never gave me a review

Site under construction for 24 hours.
 ..but it was a chocolate and vanilla double **