To import a workspace to a main CUI file
- Click Tools
tab
Customization
panel User
Interface. 
At the command prompt,
enter cui. The Transfer tab is displayed, with the main CUI file displayed in the Customizations In pane (left side).
- On
the Transfer tab, in the Customizations In <file name> pane
(right side), click the Open Customization File button.
- In the Open dialog box, locate and select the customization file that contains the workspace you want to add.
- In
the right pane, drag the workspace from the CUI file to the Workspaces node
in the main CUI file (left pane).
- Click OK.