Get activities (v3)

Read what is next and what runs now for the organization's campaigns: id "organization", a product ("discovery", "experience", "research") or one campaign id. Returns the next customer and run; the customer work in flight (for a campaign, from its product's calendar: running, admitted and due, or placed and due, a launch whose first customer is ahead not in flight; for a product or the organization, from stored facts: every unfinished run Billing admitted for an entry as running, and each campaign's stored next customer once due); the part of it that campaigns a person paused or archived hold (finishing: earlier work finishing, none of it new); why nothing is scheduled when paused or on hold; Billing's admission of new work per product in scope; and the activity revision. A campaign Point11 holds (an operator stopped a run and has not released it) promises no next customer or run, and when nothing else in scope is active the pause names it (cause "hold").