Hello all i am new here and i am having difficulties changing formation. Any help will be very useful at this point in time. Thanks

Did you follow the tutorials?

Onuwaje91: Hello all i am new here and i am having difficulties changing formation. Any help will be very useful at this point in time. Thanks

Go to tactics.

Tap on a player in your starting lineup
And tap on anyone in the substitutes you want to swap him with.
If you want to change his position, go to the player profile and tap on position select anyone you want and the formation will be adjusted accordingly.
You can also change position by choosing the arrow beside the player name in the tactics menu.

In the starting eleven tab, you can save a formation or ask an assistant to build a line up for you. You have to save ithe line up.

I was a bit rushing because I have work today. But If you don't understand completely you can ask for more clarification.
Have a good game mate.