Thanks for keeping in touch with us here in the Community, @tjschmidt
Currently, we're unable to combine these different billable times into a single line item on an invoice. QuickBooks will show these transactions per line item.
On the other hand, we share recent events and future improvements in our blog. This way, you're able to get the latest news about QuickBooks and what our Product Care Team is working on. You may visit this site to learn more: https://quickbooks.intuit.com/blog/.
You'll also want to know how to customize reports in QuickBooks Online to pull up the desired information for your reports: How to customize reports in QuickBooks Online.
Also, if you'd like to save the current customization settings you've set up for your reports in QuickBooks Online, you may memorize these reports. Please refer to this article on how to do it: How to Memorize reports in QuickBooks Online.
Get back here in the Community if you have more questions. I'll be here to help. Take care and have a great day!
