Thanks for getting in touch with the Community, valerie5.
 

With your new invoicing layout, you can add lines by clicking the current line you're on.
 

I've included an image showing my experience:
 

In regard to invoicing time charges, I can certainly understand how an ability to choose what order they're entered in could be useful and have submitted a suggestion about it as of today.
 

You can also submit your own feature requests while signed in.
 

Here's how:

1. Use the Gear icon, then go to Feedback.
2. Enter your suggestion(s) in the Have feedback? window.
3. If necessary, attach a file with your Camera icon.
4. Select Next.
   
   

Your feedback's definitely valuable to Intuit. It will be reviewed by our Product Development team and considered in future updates. You can stay up-to-date with the latest news about your product by reviewing Intuit's Product Updates webpage.
 

I'll be here to help if there's any additional questions. Have a great Monday!