To Add a Template to a Tool

In the Customize dialog ( File > Settings > Configuration > Customize ) , click the Tools tab.
Expand the User Tools section and expand the open DGN file.
Expand the toolbox containing the tool to which you are adding a template.
Select the tool to which you are adding a template.
The Template Path property appears in the Properties pane under the Command Data tab. If the Template Path property is not visible in the Properties pane, click the arrow on the right side of the Command Data tab. If the Template Path property does not exist in the Properties pane, complete the next two steps.
(Optional) Do one of the following:

Right-click the tool and select Add from the pop-up menu.

or
Right-click below the tool's existing properties, and select Add from the pop-up menu.

A cascading submenu of property categories and properties appears.
(Optional) Click the Command Data tab, then click Template Path.
In the Properties pane, click the arrow to the right of Template Path.
Expand the template group and double-click the template that the tool will use.
(Optional) Right-click the tool to which you are adding a default template and select Add from the pop-up menu.
(Optional) Click the Command Data tab, then click Default Template.
(Optional) In the Properties pane, click the arrow to the right of Default Template.
(Optional) Expand the template group and double-click the default template that the tool will use.
Note: In the Properties pane's Associate Template field, ensure that either "Always" or "Use Current Setting" is selected. If this is set to "Never," the elements that you place will use the template's properties but will not be associated with the template.