How to generate Zoho Invoice from time tracked in Zoho Projects?

How to generate Zoho Invoice from time tracked in Zoho Projects?

I'm still learning this system so apologies if this is a silly question, but I've checked the documentation and can't find anything. I am using the timesheets to track time on project tasks in Zoho Projects. But I can't see any way to then generate an invoice directly from the timesheet. I'm using Zoho Invoice for my invoicing. Are we meant to manually create invoices or am I missing something really obvious?