Can two kids alone be applied in one I-539 Application for h-4 extension?

USA L1, L2 Visa
1

I am applying for extension of my current H1-B and want to apply for extension of my kids H-4 along mine.

Earlier they were applied for H-4 along with my wife and got it approved. Now my wife has taken separate H1-B and she not a dependent on my H1-B anymore. So when I applying for my H1-B extension can I include both the kids on one I-539 form or do I have apply them separate each one on a separate I-539 Form. My attorney says " USCIS says dependent spouse and unmarried kids (below 21 yrs ) can be applied on one application but no where it is said kids alone can be on same application".

Thanks

2

It is ok to just apply kids on single 539 without including the spouse. It is not necessary that spouse be included as a pre-req for including kids.