Cannot generate the 8 users that I had asked for

I'm attempting to go through the Load Runner tutorial published 0n 8/15.  On page 48 it talks about the Scenario Groupspane.  I see a Scenario Scriptspane. I assumed that the title was changed and nobody caught it.  No big deal.  But when I click the Details button there is no Group Name in the Script Information window. Once again I assume "No big deal"  But when I run the load test scenario (pg. 61) and look at the diagram on that page I don't have any number under the Group Name travel_agents.  I should have the number 8 there.  I decided to run it anyway to see what happens.  It generated 4 users, rather than the 8 users I asked for. I assume that 4 is the default.