https://www.bmc.com/blogs/itil-service-level-management/

Effective incident management often requires a high level of collaboration within and between teams as this can facilitate information-sharing and learning, as well as helping to solve the incident more efficiently and effectively. There may also be a need for good collaboration tools so that people working on an incident can work together effectively. One technique that takes advantage of collaboration is termed swarming. This brings many different stakeholders together to work on the issue. Management of incidents may require frequent interaction with third party suppliers, and routine management of this aspect of supplier contracts is often part of the incident management practice.
https://www.bmc.com/blogs/itil-incident-management/

Explanation/Reference: https://www.bmc.com/blogs/itil-problem-management/

The change schedule is used to help plan changes, assist in communication, avoid conflicts, and assign resources. It can also be used after changes have been deployed to provide information needed for incident management, problem management, and improvement planning
https://www.bmc.com/blogs/itil-change-enablement/#:~:text=The%20change%20schedule%20is%20used,problem%20management%2C%20and%20improvement%20planning.