Client shall specify an event, time window (like a week or so or from some date to another in particular month) mentioning the place where event is proposed to be performed and of course the birth data.
Three most auspicious dates and time (in a given time frame) will be communicated to client to choose from.
Muhurta (Auspicious time)
Event started at auspicious time is successful. Need birth data, event & its place and date.