Required agents use Erlang C on your real offered-call volume. Edits to Core and Peak are kept separately and both feed the year view. The 8–10 PM tail is covered by your dedicated agent, so this plans 5 AM–8 PM.
Data source
Using built-in data — about two years of Flex history.
Export the same Analyze report (Interval 30 Minutes × Day of Week × Month, with Handled + Abandoned) over a wider date range and load it here. Aug/Sep/Oct classify as Peak, all other months as Core, and times shift Eastern → Central automatically.
Core months run one shift plan; Aug–Oct run your Peak plan. On a rolling budget the quiet months bank room for the launch surge — what matters is the year landing under the envelope, not any single month.