Change subs in the champion league

Does anyone know how to increase the number of subs used in the champions league? After the first season it goes back down to using 3 subs I would like to keep it at 5. 

I have already tried:-  Rules > Add Nation Rules >  Selected Nation "England" ticked Add Lower Divisions And Cups to Existing Structure > Convert to Advanced Rules and UEFA Chanpions League is not there as an option. 

I have also tried changing the nation to Spain and Germany still not there

The Faqs explain how to do this 

I'm sorry but i can't find the Faqs on the site

Hi there, the FAQs are here:

https://sortitoutsi.net/content/57138/how-to-access-advanced-rules

About half way down the page you'll see How to view continental/international rules

Just follow this guide and you should be good to go