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You can select a different sketch from the feature Tree Outline to change this input. Similarly, for
features like Skin/Loft and Sweep that require more than one sketch as input, the feature Tree Outline
is used for sketch selections.

Before a sketch can be used to create a feature, you must define it on a plane. All sketches are attached
to unique planes. Only a single sketch can be worked on at a time. This sketch is the “active sketch.” To
make an existing sketch the active sketch, select the sketch object in the feature Tree Outline or in the
Active Sketch Drop Down menu in the Active Plane/Sketch Toolbar. You can then select the sketching
tab to enter the sketching mode and edit the sketch. Even though you can only add edges to the active
sketch, you can add dimensions or constraints between edges of different sketches in the active plane.

New planes can be inserted in the model by clicking the New Plane icon in the Active Plane/Sketch
Toolbar. You will then be prompted for input to clearly define the plane using the different options
available.

A plane can have any number of sketches attached to it. This is required in many instances because
different features created on a plane may use different profiles. The DesignModeler application does
not allow you to select certain portions of a sketch, ignoring others, for use in feature creation.
Features can only be defined using entire sketches.

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