
click to enlarge
To involve your client when using Scrum, you'll need to make sure they are monitoring the product backlog. This is a key element in the Scrum methodology process and the client is responsible for making entries or adjustments to the project throughout the project process. While the client is responsible for the upkeep of the product backlog, your team is responsible for developing the client's requests.
When it's time for the Scrum sprint meeting which are usually held at landmark points of the project, if the client hasn't reviewed or provided the team information on what needs to be done, chances are, you team isn't doing anything or doing it wrong.
As a project manager or Scrum master, you need to carefully orchestrate everyone's involvement as defined by their roles in Scrum methodology. Because the client is the product owner, they are responsible for the cost of production of the product or the business value of the outcome of your project. You client gives the "what" of the project with clear descriptions, key points and suggestions on how it will work. Ignoring the client or not involving the client will create a gap and you'll lose effectiveness.
For tips on how to use the Scrum methodology for your project, including client roles, use the Scrum Cheat Sheet found in our Project Management Media Gallery.