Introducing storylines early?

[LlevameContigo]

Hey everyone.
I am currently writing a novel and I want to insert a few different storylines into it. I need to include these storylines in order for the reader to understand the overall plot better.

I read something that said you should wait until the end of Act 1 to introduce a second storyline.

Do you have to do that or can you introduce them whenever you feel they could fit in to the story? I have several storylines that need introducing.

Thanks.

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[Nick Pierce]

You can, of course, do as you please.

I would tend to read, and have read, anything that doesn't overload my reference ability at the story inception.

[K.S. Crooks]

I think the key is t make the introduction feel natural and not forced. Decide on the why and where a plot line will come into play and this will guide you to know when it will become involved with the characters or the reader.