07-30-2016 09:44 AM
You need to clarify your question.
Formats are used to control the display of information, so by 'adding' a format do you mean creating a new format or applying a format to a variable.
An example of applying a format is straightforward, and involves the format statement.
Data stocks; Set sashelp.stocks; Format date worddate.; Run; Proc print data = stocks (obs=5) labels noobs; Run;
You can't create a new format without proc format, in some manner.