Definition
A three-to-five-day concentrated activity that directly installs a unified process, form, or cadence into a team (for example, installing a sales funnel or management board), as opposed to an improvement-type Kaizen week that solves a specific problem. From a publicly published book, not textbook terminology.
In detail
A Kaizen Event is usually understood as "solving a problem," but system rollout needs another use: installing a shared language and standard practices all at once. The output of an Installation Kaizen is a mechanism that starts running, not an improvement in a single metric; acceptance looks at whether the mechanism is truly used every day and every week. The two types of Kaizen Events can alternate: first install the mechanism, and once the mechanism exposes problems, use improvement-type Kaizen Events to solve them.
Example in practice
Each sales department has its own customer follow-up sheet, and forecast accuracy cannot be evaluated. The transformation office organizes a five-day Installation Kaizen: day one training, days two and three entering every open opportunity into a unified funnel and defining stage criteria, day four rehearsing the weekly meeting, day five delivery; thereafter every weekly meeting is discussed based on the same funnel.