JRutledge wroteThey do not have to declare anymore who they are coming in for.
JRutledge is correct. Note the word "anymore" because this was not always the case.
One great source of incorrect rule myths is old rules that somehow never die, and never fade away completely (with apologies to General Douglas MacArthur).
3-3: A substitute who desires to enter shall report to the scorer, giving his/her number.