overview page ?

Hi
You can create an page for each lane that it's shared between users of the lane.
Usually general information of the process shows in overview page like business and process variables, timeline of the process , ....
According to Bonita Documents:

The case overview contains three main sections:

List of business data: the content of the business variables used by the case
List of documents: the content of each document used by the case
Timeline: information in chronological order about all the actions that have been performed in the selected case