Opening a Model 
Choose or click
(Open Model) button in the main
toolbar. The Open Model dialog box is displayed. (If the Get Started task panel is displayed at the right, you can select the file from the hierarchical tree or from the Recently Used Models list in that task panel.)
In the Open Model dialog box, expand the node in which your model resides:
MyModels includes the models that you create in your client workspace.
Public includes models created for general use by all users.
Select the model you want to open and click Open. The model is opened on the Design board.
Note
If you receive a message that the model is locked, you can:
Open the model in read-only mode, for viewing only
Open the model in read-only mode and use to save a copy and edit it.
See Unlocking Models for information about unlocking your own models.
In the Open Model dialog box, if you decide not to open a model but rather to create a new one instead, click New and create the new model according to the instructions in section Creating a New Model.