Hi there, seconaway.
I appreciate you for coming back to the thread and adding more clarifications about your concern. With this, I'll be sharing alternative methods to ensure you can enter the same 24-hour shifts in the schedule.
Putting or entering the same time on the Schedule section, such as 8:30 a.m. to 8:30 a.m. the next day, is not currently unavailable. This is due to the fact that our program will not recognize the same time details to ensure your employee's details are accurately recorded
For now, I recommend selecting 8:30 am as the start time and 8:29 as the end time as a workaround. This way, the options to click Publish and Save Draft are no longer grayed out. Additionally, you also have the option to choose 8:30 am to 8:00 am and the remaining 30 minutes will be applied to the next scheduled time. Then, the work time will still fall with the specific employee.
Lastly, you may refer to this article to view steps on how you can view and edit time entries: Track and manage QuickBooks Time in QuickBooks Online.
Don't hesitate to comment down below if you have other QuickBooks concerns about managing time transactions with your employees. I'll be around to assist you always, seconaway. Have a great day ahead.