Lentil help

[Bubblysqueak]

Hoping someone can help me. When you are making for example spaghetti Bolognese or a curyy and you add dried lentils, do you need to precook them, as in follow the cooking instructions on the bag?
Or can I just put them in (especially if there is lots of juice for them to absorb)?
Im cooking a curry at the moment and overdid the stock, I'm wondering if I add lentils it will help, but don't know if I need to cook them.

You can add red lentils dry. You'll need to simmer them in enough fluid / stock until they are tender.

I measure them at 1 oz per person, then put them in a sieve to rinse, then put them in the pot. No pre cooking required. They do suck out all the flavour tho, so use plenty herbs and spices

Thank you! I'll add some now.