"Member tickets" are for people who are members of the Society of Research Software Engineering. If you are not yet a member, you can sign up for £20 a year.
When buying a "Member ticket", you must make sure you use the same email address that you used to sign up as a Society member.
If you are buying tickets for multiple people, we would advise you to check that you are registering members using the same email address as their Society membership and check out the registration questions beforehand so that you have answers from each person ahead of starting the booking process. You can find these in the pdf below.