Is it possible to change the default bonita portal UI layout to custom layout? If yes please give me the solution. Appreciate your feedback.
Yes, you can update the current Look&Feel or create a new one.
The documentation can be found here : http://documentation.bonitasoft.com/managing-look-feel-1
If you change it in your Studio, modifications won’t be saved unless you uncheck the settings in the Studio>Preferences>Database>Uncheckthe boxes
Regards
Do note however that changing L&F like this are restricted to subscription versions of the software (Teamwork, Efficiency, Performance).
To change community you have to do this manually and with great care. Have a read of the readme.txt file in
{BonitaRoot}\workspace\tomcat\bonita\client\platform\tenant-template\work\theme\portal
also have a look at
http://community.bonitasoft.com/node/1791#node-4298
Which will help with the GWT styled pages,
regards
Sean