Preseason friendly matched

[slevinr87]

Does anyone know how to "force" friendly to start later for leagues that start later?

I have a nation rule where the top league starts mid-August and friendlies start in July as expected. however, in the lower leagues, the matches start in mid-September but their friendlies still start (and end most of the time) in July. 

Is there a way to push preseason friendlies to later dates (in my case I'd like them to start friendlies in mid-august for the lower leagues)

thanks