How and where do I set ImgBurn layer break?

[php111]

I tried burning a DVD to DVD+R DL, and I get a layer break selection window and I am totally lost and very confused where do I select the layer break? I posted a thread at Club MyCE and they gave me a link to a guide and I am still confuse about the layer break selection. Could someone please help me? Thank you!

[LIGHTNING UK!]

Which part is confusing you?

 

How many choices do you have in the lLB selection window?

 

Post a screenshot of it if possible please.