Standard line and length when I'm bowling most of the time.. normally on two aggression bars, decreasing against batsman scoring runs, increasing against tailenders against spinners on a turning wicket.
In one day format on one aggression bar until field goes back, and then to 0.
When batting in county mode I generally start on one bar for the openers, gradually move them up to two bars, then to 3 bars (normal) when they are in or almost in. If wickets are in hand and runs on the board, towards the end of a session with a fully in batsman I may stick them on aggressive for the last 20mins to punish the tired attack (not in the first session in the day mind

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In one day matches, I generally try to pick attacking mindset batsman, set them to 3 aggression bars from the end and with 10-15 overs left depending on wickets left set them and every batsman to come on V.aggressive (one bar from the end as they seem to play and miss on full v.aggressive)
In 20-20 games you can afford to pretty much have all batsman on v.aggressive throughout. Just try to have an all rounder or two, and aggresive batsman.
Just some basic ways I play the game, you can work out any more beyond these yourself
Hope maybe a tiny bit of it is useful
