Run multiple executions parallel in one project

In this case we have a package that runs once a day and takes 1 hour to reload. Besides this there is a package which run every 5 minutes the whole day long. 
Now it gives an error when running the once a day reload and try to start the every 5 minute reload. After the reload is done the every 5 minute reload will run again successfully.
At the moment there is a solution to create "ghosts" projects. But in my opinion this is not desirable.