For Latin Catholics First Communion is done at age 7/second grade. Confirmation varies. Some diocese do it at the time of First Communion, others around 12, others wait until high school. It was St. Pius X who allowed First Communion to be given before Confirmation which at that time was around 12/13. Of note, it is common in some Latin American countries to confirm at baptism and this may be a carry over of the Mozarabic Rite which did so.
Ea Semper (1907) forbade Greek Catholic priests from chrismating, reseving it to the bishop, but of all the Latinizations that were ever attempted to be foisted upon Greek Catholics this one was, to my knowledge, universally ignored and was certainly a dead letter after the creation of the Exarchates in 1924.
Fr. Deacon Lance