Hi there,
Congrats on your first post in the Community. I'd be glad to share more info about cheques and printing in QuickBooks Online.
At this time, QBO doesn't offer the ability to auto sign a cheque. You'd have to manually sign the cheques for now. I know how having this feature would save you time. I recommend sending this feedback over to our product developers. You can do this by clicking the gear icon and looking for Feedback. New product ideas and improvements are largely based on the feedback we get from users like you. Let me know if you have questions.
