After you file

I did owe taxes for 2018 and I file my taxes and paid it. I understand I can't enter my direct deposit for that.  However, I am about to file and pay my owed taxes and I would like to add my direct deposit information to get my stimulus check via direct deposit. When someone gets a tax refund direct deposited, that does not seem to be a problem.  However, how do I  establish a direct deposit for the stimulus check if I have to pay taxes again for 2019? 

Thank you!