Stata: How to create Group Variable in Stata

[@GulonoraMurodova]

Thank for useful video

[@Shahad-yw2zg]

Could someone help , what code should I use to make my age variable that contains ages from 0-11 into groups of categories? I want the first age group be from 0-2 , the second 3-5 the third 6-8 and the forth 9-11