Set start model
You can set a model as the start model of the database. A start model is a model that serves as an entry point into the database. It is displayed in Home.
Prerequisites
The model to be used as the start model must have been published by the editor or automatic publishing must be set.
Procedure. Procedure
Click
Application launcher > 
Models and objects.Navigate to the group that contains the model you want to use as start model. When you select the group, its contents are displayed in the details view.
Enable the check box of the relevant model and click Preview in the Details bar.
Click
Set as start model.
The selected model is displayed when you open Home.