Hello hassaoudi,
QuickBooks Self-Employed is a great choice for your small business bookkeeping. I know how important it is to save time and effort with your daily tasks, like creating and sending invoices to your clients. I'd be happy to point you in the right direction for help with this.
Since you're using the Self-Employed version of the program, I'd recommend touching base with our designated Self-Employed tech support team. These agents specialize in QuickBooks Self-Employed, and they're the best equipped to help answer any product questions you have.
Here's how to reach them via email: Email QuickBooks Self-Employed.
You can also reach them in-product using the QB Assistant.
I hope this helps get you on the right track.
Cheers.