Review your project infrastructure decisions and integrated change control process to ensure consistency with agreed-on principles.
Involve the project team members in the response planning; engage as many perspectives and points of view as practical.
Depending on the severity of the problem and the nature of its root cause, the type of response may be:
A minor change that preserves the project objective
Implementation of a contingency plan developed during risk response planning
A major change to the project
For short-term schedule problems, consider “brute force” solutions, such as working overtime in the evenings or on non-workdays.
For more significant problems, brainstorm approaches that could bring the project back on schedule. ...