You need to make the language(s) available via the Language Settings modal. You should be able to do this on the 'EN' branch of the Root Page...

Click on the Root Page of your EPiServer site, go into Forms Editing mode, click the “Tools” dropdown, and select “Language Settings”. Click the “Change” button in the “Available Languages” section, check all of the languages you want to make available for editing, then click “Save”.

Hi three languages are already avilable with the site English, French and Spanish. I already have pages translated with all three languages. When i am in english language page I just want to change for example french language change flag in "Toggle View Settings" to view the page in french and if the page is not in fech i want to see the option to translate the page into french language.