Had my legs Laser do you shave them for the next laser?

Hi everyone finally had my first treatment being lasered today
The Woman doing the treatment even shaved them before the treatment. Which didn’t really know about until it was Finshed.
I honestly thought she was brushing my hairs lol
They told me to shave them ready for the next session. Long with cream for next 7 days They said I must do it to work. But I have never shaved my legs only waxed them.