Add custom link in side navigation menu in bonita tomcat portal

I need to add custom link in side menu /main menu in BonitaBPMCommunity-7.3.1-Tomcat-7.0.67.Any kind of help will be appreciated.

Its not possible in community version. But someone seems to have changed the portal page as a workaround. You can have a look at these. This is for older version you can apply same for your version.

http://legacy.community.bonitasoft.com/groups/usage-operation-6x/resolved-real-css-change#comment-37584

Cheers
Kiran