To edit the arc-flash schedule project settings, go to
Ribbon: DME: Customization->Project Customization-> 
Arc-Flash Schedule Label Group
Pulldown Menu: DM Electrical->Customization->Labels and Schedules->Project List->Edit Arc-Flash Schedule Project List
To edit the arc-flash schedule standards settings, go to
Ribbon: DME: Customization->Master & Standards Customization-> 
Arc-Flash Schedule Label Group
Pulldown Menu: DM Electrical->Customization->Labels and Schedules->Standards and Master Lists->Edit Arc-Flash Schedule Standards List
Arc-Flash Schedule Label Display and Order Dialog Box
See the Common Label and Schedule Information section for more information about using the Move Up and Move Down buttons and the Key, Label, Width, Display, and Schedule Title fields.
Values in the Key column are listed alphabetically below. Energy measurements can be displayed in joules or calories. Distance measurements can be displayed in metric or Imperial units.
Arc-Flash Boundary Distance: This value is taken from the device definition in the Arc-Flash Settings dialog box.
Arcing Current, Maximum: This value is taken from the device definition in the Arc-Flash Settings dialog box.
Arcing Current, Reduced: This value is taken from the device definition in the Arc-Flash Settings dialog box.
Arcing Time, Maximum: This value is taken from the device definition in the Arc-Flash Settings dialog box.
Arcing Time, Reduced: This value is taken from the device definition in the Arc-Flash Settings dialog box.
Arcing Time Basis: This value is taken from the device definition in the Arc-Flash Settings dialog box.
Bolted Fault Current: The most recently calculated fault at the device, taking into account the fault from the utility and any motors in the project.
Device: The distribution equipment to which the row of arc-flash information corresponds. Devices are listed in the order they are connected, starting at the utility. Devices that are connected to other devices are indented to indicate their relationship. If the names of the devices extend beyond the edge of the column because of the indentation, increase the width of the column.
Electrode Configuration: This value is taken from the device definition in the Arc-Flash Settings dialog box.
Enclosure Depth: This value is taken from the device definition in the Arc-Flash Settings dialog box.
Enclosure Height: This value is taken from the device definition in the Arc-Flash Settings dialog box.
Enclosure Width: This value is taken from the device definition in the Arc-Flash Settings dialog box.
Gap Between Conductors: This value is taken from the device definition in the Arc-Flash Settings dialog box.
Incident Energy, Maximum: This value is taken from the device definition in the Arc-Flash Settings dialog box.
Incident Energy, Reduced: This value is taken from the device definition in the Arc-Flash Settings dialog box.
Maximum Incident Energy: This value is taken from the device definition in the Arc-Flash Settings dialog box.
Voltage: This value is taken from the device definition.
Working Distance: This value is taken from the device definition in the Arc-Flash Settings dialog box.