No - you are either applying for a Dependant Visa (in which case you fill in B, I, L) OR you are applying for an Employment Visa (in which case you fill in B, E, F, G, L). You can't apply for bot - it's one or the other.
For a Dependant Visa the Sponsor is the family member (spouse, parent, child) upon whom you are Dependant (and the Sponsor must already be a Permanent Resident of Hong Kong (they can be your spouse, child (if you are over 60) or parent (if you are under 18)) or a resident with an Employment, Study, Investment or CEIS Visa (your spouse or parent only).
For an employment Visa the sponsor is your (potential) Employer.
(By the way, it is not a valid assumption that everyone on this board is a "Gent".)