Please am new on Manager, I would like to know how to set up Salary advance on the Balance Sheet.
The answer depends on many things, including the form of organization of the business, who the advance is to, etc. It also depends on whether you are asking about how to set up an account to record salary advances or enter a specific salary advance.
Before starting new topics on the forum, please search the forum for previous discussions on the same topic. There have been many about this subject.
If you enter “Employee Advance” in the search feature 
you will find a number of topics outlining various solutions.
Another key accounting process in which Manager hasn’t provided an effective Guide.
Yet there is a Guide on how to “Exclude zero-balance accounts from Summary page”