Datum Feature PropertyManager
The PropertyManager controls properties of datum feature symbols.
To insert datums, do one of the following:
Label Settings
Label
. The text appears in the datum feature box.
Leader
Use document style. The document style follows the settings specified in Document Properties - Datums. Clear to select a different style of box and attachment. Each style of box has a different set of attachment styles.
The Shoulder options add a bend to the symbol. The shoulder bend is always horizontal or vertical based on the attachment edge. If you add the symbol to a circular edge, the Shoulder options are automatically selected.
You can use leaders for datum feature symbols that you apply to planar surfaces.

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Leader
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No Leader
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Text
Place the pointer in the text area. Click More to access the
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Leader/Frame Style
Use document display
Layer 
In drawings with named layers, select a layer.