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Select the Calculate All Angles button
Select the first part in the list and visually confirm that the correct shape has been chosen and the rotation is suitable (when comparing the overlay to the CAD shape) and either confirm it or correct it.
Advance through the list until all package types are confirmed.
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Check and validate machine placement angles
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Blue indicates unconfirmed angles
Green indicates confirmed angles
Red indicates parts with angle errors.
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Settings - The Settings 
button (the gear) in the upper-right corner of the window displays check boxes where you can specify the items that will be displayed and how angles are confirmed.
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To check and validate all machine placement angles automatically, you use the buttons on the left side of the Machine Angle Correction Center:
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Calculate All Angles - Automatically calculates placement angles for all parts.
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Reset All - Resets all placement angles to their original settings (select Yes to reset all angles when the prompt displays).
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Offset Overlays - Slightly offsets the machine package overlays in the X and Y direction in the event they are obscuring the underlying CAD footprint. (If you change your mind, select the button again to undo the offset).
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Confirm All Angles - Confirms all placement angles as they are (select Yes to confirm all angles when the prompt displays).
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Select the Calculate All Angles
button. (Calculate All Angles uses internal angles convection logic as supplied by the machine manufacturer to calculate the angle required by the machine based on the ECAD rotations.)Select the Confirm All Angles
button.
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To check and validate machine placement angles on a part-by-part basis, select a part under Part Number in the Machine Angle Correction Center.
Step through each part number in the Part Number list (use the Previous and Next buttons) and confirm the rotations or adjust the angles and then confirm the angles.
Make any necessary changes, then select the Confirm
button for each part number.Use these buttons to help you confirm machine placement angle settings for a selected part in the Part Number list:
Note
The Apply angle change to affected features 
button (next to the Machine Angle field) references the Features Affected drop-down. When you change a machine placement angle for a selected part, you can use the drop-down to apply the angle change for all features (Select All check box) of the part or just those features whose check boxes are selected.
