keycard for renault laguna 2001?

hi all, having a few problems with my car.....my boyfriend bought it a few weeks ago, but we r having trouble opening and locking it with the keycard buttons.....does anyone know if we have to hold it a certain way or point it a certain way to open and lock it....didnt get a manual with car when we got it.....and its driving us insane, especially when we r trying to get 2 young children into it in this weather...many thanks,

jo