To Insert Datum Targets
1. You can insert a datum target in the following ways:
◦ Annotate >
Datum Target. A dynamic preview of the datum target frame appears. The
Select Reference dialog box opens.
When the Datum Target ribbon tab is displayed for the newly created standalone datum target, the Point option is chosen by default for the Target Area. The width edit box is enabled and empty. The datum reference edit box is also enabled and empty, which is used to define the datum reference. The newly created datum target is available in the Detail Tree.
◦ Annotate > Datum Target Annotation Feature. The Select Reference dialog box opens.
When the Datum Target ribbon tab is displayed for newly created datum target using Annotate > Datum Target Annotation Feature, the Point option is chosen by default for the Target Area. The width edit box is enabled and empty The datum target is available in Model Tree and Detail Tree.
2. Select one of the following reference options on the Select Reference dialog box:
◦ 
— Any reference on an entity or surface.
◦ 
— The midpoint of an edge or an entity.
◦ 
— The intersection point of two entities.
The datum target frame appears attached to the selected reference with a leader. You can move the datum target frame to a location. The leader moves along with the datum target frame with its other end attached to the point selected on the reference.
3. Click the wheel button to place the datum target frame at a location. The Datum Target ribbon tab opens. After you place the datum target, you can also click the datum target to open the Datum Target ribbon tab.
4. After you place the datum target frame, you can update the properties of the datum target with the following options that are available on the Datum Target ribbon tab. You can specify as follows:
◦ Target Area, as Point, Circle, Rectangle, or None.
◦ Size and select datum references from the model.
◦ The place the target area size inside or outside of the datum target symbol.
◦ Move or rotate the datum target symbol.
◦ The arrow style for the attached leader.
◦ A straight leader without elbow or no leader at all.
◦ Set the leader to the near-side or far-side of the selected reference.
When you finish placing the datum target, a corresponding entry is added to the Annotations group under the relevant view tag, on the Model Tree.
For a placed or existing datum target, you can right-click and change the reference of the datum target, erase, or move it to another view.