Some help with lnc files

[Cenotaph]

So I intend to take over one of the new teams getting promoted, previously I've always created a team but a LNC file could do the same work. And I wouldnt have to start a new game

"CLUB_LONG_NAME_CHANGE" UNIQUEID "Led Zeppelin FC" "English"

"CLUB_SHORT_NAME_CHANGE" UNIQUEID "Zeppelin" "English"

"STADIUM_NAME_CHANGE" UNIQUEID "Stairway To Heaven" "English"

do I add this to the existing lnc file in the db folder (fixes.lnc) ? or do I make a new lnc file, in that case where do I put it ? and If I've made any errors up there, please do tell.

thanks for any reply