I am not on high speed so

I am not on high speed so Youtube is a problem for me. However, if you want to widen your pattern, a multiple gives you the option. For example, if they are saying multiple of 15, your end count (excluding the 4, I will get to that in a minute) would have to be divisible by 15. Example you would chain 15, 30, or 45, or 60, etc, however wide you want it to be. Then add 4 chains at the end. This will be the only time you will do that. This gives you the amount needed to follow the pattern instructions. Hope this helps.

LI Roe