Oh there are a lot of variations, but post #14 was about it being inconvenient to call in every day. Just pointing out it can be a lot more inconvenient to have to show up every day, which is what they had to do when I worked in a courtroom. We have the 1day/1trial rule too, but you are on call for those 5 days. Once you go in, you’re clear even if you weren’t selected for a jury.
If the jurisdiction had 1 day/1 trial, and you get called more often, they you have to clear your schedule more often. If you don’t get called in or don’t serve on a jury, you are still in the pool.