Do you have a leader-board which will shows how many steps each group member has walked?
We don't have a leader-board as such on World Walking. If however you want to see how many steps each of your group members has contributed to your current walk, click on the walk and then click on the "See All" button in the "Members" section at the foot of the walk page (below the "Activity" section). The members will be listed (high to low) in the order of the number of steps have walked to date on your group's ongoing walk.
Once you have completed a walk you can find out how many steps each member contributed to complete the walk by clicking on the "Completed Walks" then click on the walk you are interested in. Again, just click on the "See All" button in the "Members" section. The members are again listed (high to low) in the order of the number of steps they contributed to complete the walk.