creo4 config.pro option documentation for: ENABLE_3DMODELSPACE_BROWSER_TAB 
enable_3dmodelspace_browser_tab
yes
*
,
no
Controls the display of the 3DModelSpace
tab in the Creo
embedded browser.
yes
- Displays the 3DModelSpace
tab in the Creo
embedded browser when you open the embedded browser for the first time in each window.
no
- Displays the 3DModelSpace
tab only when you click 3DModelSpace
in Online Resources
.