By curiosity how do you deal with generic instructions ? Like if you needed to have "you will need to come to this counter to apply for special discounts" printed next to a ticketing machine ?
Male pronouns are assumed in most such cases, but that is not necessary in the example you provided—the instruction would be the same for both genders, in Hindi at least. "आपको विशेष छूट के लिए आवेदन देने के लिए इस काउंटर पर आना होगा।" It doesn't have any gendered pronouns, most such instructions don't.
Generally, male gender is presumed if a neutral form is not available.