I took a quick look. At first glance, I think you need to send the current cell’s data to the pop-up when the edit icon is clicked. Workflow action: Element Actions > Group: Display data. You should probably have this step before the show pop-up step.
If I recall correctly from looking at your app earlier, I think it should be just Current cell’s Attendance. So you’re passing data from the current cell’s attendance to the pop-up, then, since you have it auto-bound, the location field can show that attendance record’s at-location value by default … I think. Sorry, hard to say without having your app in front of me again, right now, but do try that.
this is solved thank you so much guys for the Help…
the solution is to Display data Element = Pop Up ( Edit Information ) what i did before was set the element to the repeating group which is the test_results then make the Dropdown field Place Holder point to its Section or Column like what you see on the image above