This is a template for a Communication Plan. This type of document is typically used in Project Management. It is not intended to include the details of the content for each interaction (powerpoint slides, financial information, etc), but to coordinate what needs to be communicated to who and when.
The main components of the plan are: the topic to be communicated, the audience who is being communicated to, frequency of the communication, the channel of communication (or, how the topic will be communicated), and the owner (who is responsible for the communication).
The Project Manager is typicaly responsible for maintaing the Communication Plan and sharing it with parties of interest.