If we are still finalizing exact session start and end times for our accredited live event, what should we provide for the credit designation?

If your event is not imminent, you can supply an approximate credit opportunity range (for example, 8-10 credits) with a disclaimer that the final agenda is pending.  As you get closer to your event (and before you include a credit designation statement on any materials), ensure you make final, accurate calculations and list them in the final agenda.  Learners should be clear on the credit opportunity and amounts per session(s) before they participate in the activity.