Cast on with two strands of yarn?

I am trying to remember how to knit after not doing it for many years. In the pattern I am working on it says with two strands of yarn cast on 10 stitches. How do I do this?

Thanks!

Do you cast on held the two strands together as one, or not?

If not, this might be what you’re looking for.

Could be another cast on as well,…

If you’re to use both strands together, then you just pretend they’re one strand and cast on the same way you normally do.