See explanation below. Navigate to Settings > Customization > Customize the System. Expand the Entities menu. Scroll down and expand Leads, then click on Fields. Double click on the Status Reason field. Change status to Disqualified. Click Add. Type in the new status reason: Cannot meet timeline for delivery Click OK. Click Publish All Customizations. Open the lead named Brian LaMee. From the command bar, click Disqualify and select the new status reason. Reference: https://www.azamba.com/2018/08/16/how-to-add-a-reason-to-disqualify-a-lead-in-microsoft-dynamics-365-for-s