J3.x talk:Editing a template with Template Manager
From Joomla! Documentation
There needs to be a mention that Template customisation can be made on Admin as well as site templates. But I can't edit because of translation restrictions. Can someone please edit it ?
You should be able to do edits, there's no restrictions when a page is tagged as translated, only issue which can exist is if there several time a <!--T:X--> with the same number (these tags should never be added manually, it's the system which creates them).
If you can't edit it, please give me your edits and I'll add them to the articles, where you would like them.