L1 convert to H4

1) 7-10 days 2) Yes, you can, but it is not recommended

My sister was god married after she recived her visa under f2a case she god married before she intering to USA please

You may want to rephrase your question after correcting the typos.

L-2 child is not eligible for EAD.

Second H1-B Transfer application when 1st application is still under process

Best to address these questions to the attorney filing the petition for Company C.

Can L2 visa holder with EAD stay back if L1 holder leaves US. Currently we are staying on I-94 and our visa expires on feb 2012.

It depends - whether the L-1 is traveling on a brief work related trip? etc. USCIS may limit, deny or revoke on notice any stay for an H-4 or L-2...

I am admitted to MUM for MBA.I will apply for COS H4-F1,should I wait for approval or shall I start my course?

You will wait until approval of F-1 if you will be seeking CPT pursuant to student status.

How to apply for green card and how years I will got, (brother sister) petition

If you are in F-1 status and if you will need to extend your status in the near future, I do not recommend filing I-130.

Pay stubs are evidence for maintaining status. If you continue to maintain status, you should not worry about the number of pay stubs you have.

Change of status from H1B to F1

You will continue to maintain status per terms and conditions of the H-1B filed until termination. If this is a full-time position you cannot...

Iam on H4 and trying to convert to F1 in the next month.Will I be able to convert to H1 as soon as I get my F1?

I do not recommend COS in quick succession.