Want make some weather skining change on xml files

Hi all

First all I am new here…

i would like to do some change on kodi XML files

i dont know what of XML files i need to change for do my change (I run KODI 17.1 on windows )

i want the weather and the clock show even if i wach video or listen to music…

what do i need add or change to do it work??

please help

Thanks