Hello there, @sgf292,
Entering cost rate is found on the Projects menu. Then, click the Hourly cost rate button at the upper right. You can check out the two screenshots below for your reference.
Currently, there isn't an option to manually record the net pay on the Weekly Time Sheet screen. You can only enter hours for your employees. For more information about this process, you can go through this article: Set Up Time Sheets in Payroll.
I'll take note of your suggestion to help improve your experience in QuickBooks. I'd suggest checking out our blog posts to help you stay current on all the product news and updates.
In case you want to get your project labor costs in real-time. you can run the Time Cost by Employee report. For detailed steps, see the Step 3 section through this article: Project Labor Costs.
I'm here anytime you have other concerns. Have an awesome day.