from my employer, big book
I got it,
1.for H4, if I-485 pending,no neccesary to file I-539,because this application is for stay in USA. H4 holder can stay in this circumstance when I-485 pending.
2.for H1b1, file I-129 for extension.
I got it,
1.for H4, if I-485 pending,no neccesary to file I-539,because this application is for stay in USA. H4 holder can stay in this circumstance when I-485 pending.
2.for H1b1, file I-129 for extension.