If other people ( such as planners) make activity estimates(time, cost, resources), then what is the project manager role in estimating processes?

• • Provide the team with enough information to properly estimate each activity.

  • Let those doing the estimating know how refined their estimates must be.

  • Complete a sanity check of the estimates.

  • Prevent padding-adding more time and cost to estimation when no information available )

In addition to the answer above . Project manager ensures that any assumptions created during estimating should be recorded for review . Project manager formulates reserves.