You can set a default layout to be displayed after you launch the Web Client. 

To set the default layout, do the following:

1. Go to Manage Layouts mode (see Creating and deleting layouts).
2. Go to the desired layout.
3. Click  and select Use by Default (1). 
   

Now, the current layout is assigned as default.

To assign another layout as default, repeat the steps above.

To make the system operate without a default layout, click  and select Do not use by default (2).