For creating iArchiMate Projects select File > New > Other. The following wizard is shown.

In the wizard select iArchiMate > iArchiMate Empty Project or iArchiMate Example Project

For creating iArchiMate Diagrams select File > New > Other.

In the wizard select iArchiMate > iArchiMate Diagram

Set the name of the diagram and select the folder views/diagrams

Set the name of the model and select the folder views/models

For importing models from Archi select File > New > Other.

In the wizard select iArchiMate > Import Archi Model

Select ArchiMate model

Select target path