Question: Why is the Improve Effective Reach option grayed out when I attempt to optimize a plan?
Answer: If the Improve Effective Reach optimization option is grayed out, you will need to alter the Effective Reach settings for the plansheet. See the below table for a break down on which Effective Reach settings allow the Improve Effective Reach optimization.
To change the Effective Reach settings, click on the Settings tab at the bottom of the plansheet. In the top right section, you are able to adjust the Effective Reach.