1. Select a starting point and select (Business Process Model) to create a business process model. Alternatively, open the existing business process model to which the user interface needs to be attached.
2. Follow the appropriate procedure to add the required user interface or external user interface to an activity in the business process model.
   • Drag the <User Interface> or <External User Interface> from the <Project> tree list in the Workspace tab onto the business process model.
   • Drag the <User Interface> or <External User Interface> from the User Interface group in the Insert tab onto the business process model.
   • Right-click the activity, select Insert > User Interface and select the appropriate user interface from the Select a User Interface dialog box that appears.
     The user interface is added to the activity in the business process model.

     Note:
     If you drag and drop a <User Interface> onto the activity, you will be asked for confirmation about description change of that activity with the description of the User Interface that is being associated. But if you choose to associate the same through the context menu Insert > <User Interface>, then the confirmation dialog is not shown. The selection overwrites the activity description with the selected <User Interface> description.
     Similar functionality is also applicable when a selection is made for the <Case Model Activity>, <Business Process Activity>, <Decision Table>, or for a <Web Service Operation>.

     If required, you can further add a Functional Role, Organization Unit, Work List, or a Business Calendar to the activity. You can also modify the user interface added to the activity.

3. Follow the appropriate procedure to add the required role to an activity in the business process model. This is an optional step.
   • Drag the <Role> from the <Project> treelist in the Workspace tab onto the business process model.
   • Drag the <Role> from the Role group in the Insert tab onto the business process model.
   • Right-click the activity, select Insert > Functional Role and select the appropriate role from the Select a Functional Role dialog box that appears.
     The role is added to the activity in the business process model.

     Note:
     The procedure for adding an Organization Unit, Work List, or a Business Calendar to an activity is the same as Step

     3. Follow Step 3 to add these to the activity in the business process model.
4. To set the properties of the user interface added to the activity, right-click the <User Interface> or External User Interface in the business process model and select Properties. The <Activity> - Task Properties pane appears.
5. Set the properties of the <User Interface> or External User Interface. Refer Activity Properties Interface for detailed information about the options available in the <Activity> - Task Properties pane.

A User Interface or External User Interface is attached to the business process model.