The second step in creating a ConOps is to the define the users and understand their priorities by creating a mind map of all frontline personnel.
Identifying users is based on who interacts with the CBTC system. For example, a train driver interacts with the train which is controlled by the CBTC system establishing him as a user. (see the figure below).
This process is repeated until all categories of users are defined for the system.
Once all frontline personnel are defined, the priorities and concerns for each user are ascertained.
For example, the train driver is a user of the CBTC system and he is concerned with:
Various train modes of operation
Alarms displayed on the console
Trainborne and wayside equipment redundancy
See the figure below
This process is repeated for each user until all concerns are highlighted.
The video discusses how to define users of a CBTC system and highlighting their priorities using a mindmap.