Hi @Anonymous,
Because the action you configure is to operate on the same Excel file, even if you use two different tables of data.
So when you use the Insert row action, the file will be checked out.
At this time, other people can't do anything else with this file, even if you Delete row action configured by your account.
Currently Flow does not have an action to check in the file, so there is no way to continue to add/delete rows and update the same file directly below.
You could consider adding a Delay action after Apply to each.
After all the insert row actions are executed, delay the execution of Delete row action for an hour. Because the file will be automatically checked in after a period of time.


Please take a try.
Best Regards,