Auto-eat can be used in several different occasions. Mainly used in PvP to quickly eat after or during a special attack from your enemy.
Can also be used to make other actions easy, such as mm2 caves prayer potion drinking, making sure your saturated heart is up whenever possible, auto-antivenom/poison and much more.
In here, you set your values to your eat profile.
This is where you can get really lazy, if you configure this correctly.
There are a bunch of options you can choose from to make stuff super AFK and not have to think.
This can be anything from Prayer potions, to antivenom to saturated heart, to death charge and a bunch more stuff
Here comes the big one.
PvP triggers work from t1>t2>t3
So you can enable all 3 at once, setting them up properly will automatically triple eat at x threshold. This mean you can set it to double eat at 40 hp, triple at 25 or below, or single eat at 60 (Example)
This plugin can help you be extremely afk, say for a slayer task. If using prayer, put on auto-prayer, maybe even combat potions too. Can also just be used for regular food. Combine this with something like auto-teleport to teleport out in case you run out of food, or after a certain amount of time is really helpful to go do other stuff while you afk that boring hellhound task.
Extremely good to keep you alive during PvP activites in general. Play around with it, get a feel for it and find what fits you best.