Use the Options dialog box to tune UML modeling features to best fit your requirements. 

The Options dialog box provides a number of diagram customization settings. You can configure the appearance and layout of the diagrams, specify font properties, member format, and level of detail.

1. On the main menu, choose ToolsOptions.
2. In the Options dialog box, expand the modeling category.
3. Select the desired option level.
4. For the Project and Diagram option levels, choose the project or diagram where the configuration changes should apply. To do that, click the chooser buttons in the corresponding fields and select the desired project or diagram from the model.
5. Click the desired subcategory.
6. Edit configuration options as required.
7. Click OK to apply changes and close the dialog box.

You can make configuration options final at a certain parent level and disable any changes on the lower levels:

1. On the main menu, choose ToolsOptions.
2. Click the modeling category to expand it.
3. Select the required sub-category (default, project group or project).
4. Check the Disable sublevels option.