Defining Preferences - Check Schedule Tab Open the Preferences dialog box by selecting File > Preferences. Click the Check schedule tab. For process resource groups and for tank resource groups, select one of these options: Option Description check nothing If you want the resource groups to be ignored, select this option. don't check overlap If you want to ignore only batch overlaps for resource groups, select this option. Note: For non-critical resources, omitting process or tank batch checks can save time and reduce the number of error messages. Click OK to save your preferences and close the dialog box. Alternatively, continue populating tabs in this dialog box. Related topics About Check Schedule About Preferences Overlap