Club Banners showing Crest - Possible to edit?

Does anyone know if it is possible to edit the club banners that appear in game, not the adboards, but the banners that show the crest/logo of the clubs playing in the crowd? The ones that show in the stands and behind the goals in the stairwells as shown in these screenshots. 

Which ad board pack have you used? Thanks. 

@fmilln7  For the Scottish clubs I have taken a previous pack by rabcp and updated it down to Highland league level and will keep going until the entire Scottish pyramid is done.  The Scottish ones above are mainly mine combined with rabcps. For some stadiums I have placed them in specific places but it doesn't work as well as it could e.g. repeating static boards hard coded into the game in places you would want another board to show. 

Beyond Scotland, there is a pack by crackvictor which is up to date for some big european clubs that may be worth a look but because of licensing issues, sharing packs, at least in the UK, is banned and si wrote to pack creators a few years back stating that they cannot be shared etc. Obviously, personal skinning is possible and I wouldn't want to share packs in the event that it caused issues for me or resulted in si preventing personal editing. 

Basically, what I use is a combination of rabcps pack, the banners pack that is out there for FM20, crackvictors pack and personally created boards. The main issue is I that I need to amalgamate various xml files, which I am part way through but won't finish for a couple of months. I don't have the expertise to do anything with video boards, so rely on those from the other packs, but I do update static and might do static for England too. Unfortunately, I can't share it publicly given the issues raised by SI when these used to be shared publicly. 

Ok I understand. Thanks

@fmilln7 Hi, how do you merge the packs?? I’m trying to add some to the rabcp packs by changing/ adding the xtml code etc but it’s not working. Any tips/ideas??

Thanks.