I'm starting to work in the US with a B1 in lieu of H1 visa and want to bring my family with for the duration of my stay. Is this possible? What is the process i need to follow?
Here is a nice article on related FAQ for when you want to invite your family over which is them applying for B2 visa.
Some additional information in the links is
Supporting Documents for B2 visa for B1 holders spouse or children requesting dependent b2 visa to accompany while B1 person visit USA.
Following documents are not mandatory but can help during the visa interview if you are applying B2 visa in to accompany B1 visa primary person.
Copy of B1 visa holder's passport and Visa. (IF B1 holder already procured his/her visa) Letter of invitation from B1 holder ( formal letter stating that B1 visa holder person wants you to visit/accompany) Include,. if the B1 holder would take care of the entire expenses. If the Company/organization who is inviting the B1 person taking care of the expenses of the trip for Spouse and children of B1 holder, provide a written copy of letter indicating the same. Letter to consulate from B1 ( primary visa holder) requesting visa for spouse /children. Letter from Business( company) of B1 visa holder to the consulate endorsing and requesting the visa for B1 holders family may also help. Other suggested documents for visitor visa
Occupation related: If you are employed, get a letter of employment verification. If you are a government employee, you must get a an NOC. If you are self-employed, you must get proof of business ownership and financial. Note: The above list of documents is not mandatory, and depending on individual circumstance, some of these documents may not be applicable. Additionally, there may be documents or evidence you can present before the consulate officer that are not listed above. The above list is the most common documents requested by immigration officers during visa interview.