Create a new SIDE Data Diagram

• Go to src/models/data directory
• Click on New and choose SIDE Data Diagram
• Give it the name you want, for example Person

Create a class package 'org.sidelabs.is.common'

• On your newly created diagram, in the Outline view, click on Model
• In the properties view, indicate your Model name, for example 'Person'
• Come back to your Outline view and right-click on Model
• Click on Create Child/Class Package and in the Properties view indicate 'org'
• Repeat this step until you are satisfied with the result. For this example, I suggest you to create four class packages: 'org', then 'sidelabs', then 'is', then 'common'

Add a new diagram in this package

• Right-click on the existing diagram, then choose Delete to remove the original diagram which is useless
• Right click on your last package, 'common' for example and choose Add Diagram/Data Diagram
• Name it 'Person' in the Properties view

Create a class 'Person'

• Click in the Outline view on the diagram you just created
• Click on Class object in the left menu
• Click in your diagram on the right to set up the class. Call it 'Person'
• Click on Property object in the left menu
• Click in your 'Person' class to set up the property. Resize your class.
• Double-click on 'Attribute' and name it 'firstname'
• Repeat this process to set up another property and name it 'lastname'

Check and Save

• Validate your model by clicking on the green icon, near the zoom selector
• If everything is ok, your model is valid. 2 common mistakes are to forget to indicate a model's name and to use invalid chars in names (like blank space or french accents)
• Click in the top menu on File/Save or type the key combination (Ctrl + S)