Help Fulfilment - Purchase to reduce their error budget spend

In mstaff#68 we committed to helping the stage groups with the largest error budget spend.

• On the 26th of May, we saw that Fulfilment Purchase had a spend of 4 days.
• On the 18th of June, we see their spend is at 3 days.

Dashboard: https://dashboards.gitlab.net/d/stage-groups-purchase/stage-groups-group-dashboard-fulfillment-purchase?orgId=1

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For this issue we should generate a custom 2-minute video that introduces them to the new attribution panels on the dashboards to show them how to interpret their error budget spend.