Curious Question about Lang.ini and Boot.wim

I read about a lang.ini file do I have to create one after I inject the languages with Dism in index:2 of boot.wim file if so where do I put it in Boot.wim file so WinPE can see the languages. Show I inject the index : 1 and 2 to make the PE see the languages ? Thank you in advance, JTM

usually in sources folder of the distribution and in sources folder of boot.wim image 2

Thank you for the help!