Growing up, my siblings and I averaged getting enemas two or three times a month, while school was in session. Normally, we received a soapy followed by a rinse enema. Mom had us hold the soapy enema for at least five, but no more than ten minutes. And the rinse enema was held no more than five minutes, sometimes a lot less. Depending on the circumstances surrounding a particular enema session.
When school was out for the summer, we spent a lot of time at our grandmothers. There, our young teenage aunts were responsible for our evening bath, including enemas. At home, mom gave us enemas laying naked across our bed together. But at grandmas, the girls gave us enemas in the big downstairs bathroom together, laying naked across their bare lap. The normal routine was a couple of enemas on Saturday evening at bath time. Like mom, they gave us a soapy followed by a rinse enema. Having us hold both the soapy and rinse enema for around five minutes. Again, depended on the circumstances surrounding a particular enema session.
As we got older, grandma had the girls switch from putting us naked across their lap, to naked in the knee chest position. This happened when I was around nine. Right afterwards, she also had the girls increase how much volume they gave us for both the soapy and rinse enemas. Not only did she increasing the volume of our enemas, but how long we had to hold them. And depending on the circumstances, it could be anywhere from five to fifteen minutes.