Edit a competition

Hello FM users !, I want to consult How can I change the format of the final of a cup? It turns out that the final is roundtrip, what I want is for it to be just one match and in a neutral stadium.

I bought the in-game editor in question but apparently it only works internally. I don't know who to used extrenal (Epic) 

do you have the pre game editor on epic games? you can only edit comps with it and you would need to do it via advanced rules there is a sticky thread by me on how to access AR etc

I bought the editor but apparently it only works internally, I charged at the time for the free game in EPIC, if you bought the FM20 editor inside the game, how do I download it to make it work outside?

you have bought the in game editor as said that cant edit competitions

you have to use the pre game editor which comes free with the game I use steam and so it is in the steam library under tools, epic I have no idea you need to ask them how to download

a quick google search -