The easiest was it to register your group, tally the km offline, and enter one total per trip or day on the Silver Chain Challenge website.
However, it gets more complicated if you have people of mixed ages in your group, as extra points are assigned for participants 16 years of age and younger, and those over 65 years.
The best option is to register on behalf of each age group entering a relevant Date of Birth.
For example, a family would create an account to tally km for the children, plus a second for parents and young adults over 16 years of age. If grandparents are also participating, create a third account to log their km.
Remember, you will require a unique email for each account.