Need Advice? TSSO formation corner

[TimYoung]

Never do easy tackling apart from against illegal formation.

Try 433, red arrow on full backs, attack mentality, mix passing, no counter.

[DiZZee]

Never do easy tackling apart from against illegal formation.

Try 433, red arrow on full backs, attack mentality, mix passing, no counter.

Tim was this in response to my 5 2 3 post?

What is easy tackle for? And why to be used only against illegal formation?

I am still confused as to attacking mentality and red arrows, as this is seen as the same thing to me. Do both not mean "going forward"?
Can blue arrows be used in attack mentality? As this does not make sense to me.

Thanks for any input.