You can now add the Manual Entry page in Salesforce Classic and track time for Projects/
To add the Manual Entry page
- Log in to Salesforce as Administrator
- Go to the Projects view page and Settingshe setting tab and click on Edit Object

- Click on Page Layouts
- Select the page to which you want to add the Manual Entry component
- Scroll down to see "Visualforce Pages" and click it,
- Drag and drop the "Sectionbottom the Page layour at the boot

- Now enter a name for the new section (Manual Entry)
- Select the Layout and click the OK button.
- Now the section is added to the page layout

- Click the Spanner icon to add fields to the Manual Entry section
- Save the page.

The users can now add time to the Projects they worked on using the Manual Entry page in Salesforce Classic.