You open a DTP Assignment component from the flow chart of the template to which it belongs. Unlike formula and script components, you cannot open it from the System View.
To open a DTP Assignment component:
In the System View, expand the Financial Management, Planning, or Essbase application type, the application, the calculation type (for Financial Management), the plan type (for Planning), or the database (for Essbase), and Templates.
When the template opens, select the DTP Assignment component in the flow chart to see the DTP Assignment properties.