To arrange friendly matches, click either the first
team/reserves/under 18's fixtures list. (The one you click will be
the team playing the friendly). Then select "Arrange Friendly".
Then choose your date by clicking an available one and then select
your opposition. You can also select teams from other countries,
whether it's a home/away friendly etc.
Alternatively, click the "Manager" options at the top. Then choose
"Options" and select your Assistant Manager to arrange for you the
friendlies.