Add a task in Desktop Validation -> ID B4.4 with a duration of 5 days: Dependency: Finish-to-Start (FS) with B4.2. New Dependency: B4.5 will now have a Finish-to-Start (FS) dependency with the new activity B4.4. Increase activity C1 by 7 days: This means if the original duration of C1 was X days, the new duration will be X 7 days. Add an activity C7.5 to verify acceptance reports: Dependency: Finish-to-Start (FS) with C7.4. Duration: 3 days. New Dependency: C8 will now have a Finish-to-Start (FS) dependency with the new activity C7.5. Step-by-Step Implementation: Adding Task B4.4: Current Task: B4.2 New Task: B4.4 (5 days) Dependency: B4.2 -> B4.4 (FS) Update Dependency: B4.5 -> B4.4 (FS) Increasing Duration of C1: Current Duration of C1: X days New Duration of C1: X 7 days Adding Task C7.5: Current Task: C7.4 New Task: C7.5 (3 days) Dependency: C7.4 -> C7.5 (FS) Update Dependency: C8 -> C7.5 (FS) Example Schedule Update: Before Changes: B4.2 -> B4.3 -> B4.4 -> B4.5 C1 (X days) C7.4 -> C8 After Changes: B4.2 -> B4.4 (5 days) -> B4.5 C1 (X 7 days) C7.4 -> C7.5 (3 days) -> C8 Summary: B4.4 is a new task with a