We have done this activity in two different wards before temple trips. The first time we had a pretty small group, sat around a table and read together. We discussed and BARELY had enough time to get through the scriptures. I had gone through before and made a list of the verses they were looking for questions in so they didn't get hung up on the "were they destroyed?" questions and were really paying attention to the personal questions.
The second time we did this activity the group was bigger and they read individually or a couple of girls together. Not such a great idea. If you use this for an activity I feel like you really need to look at the dynamics of the girls in your group and decide what will work best. I have also included this in our handout basket so the girls can do it on their own.
The handout I used for the second activity has numbers referencing the verses with personal questions.