The Clients tab
Each row shows the client's projects and hours this month. Open a client to see its projects (tap one to open it), and New project, Rename, Merge into another… (when the same client was typed twice; its projects move across) and Archive / Restore. Add client is at the bottom right. Only managers see clients; staff never do.
Example: Sam finds Coastal Homes and Coastal Homes Pty Ltd in the Clients tab. He opens Coastal Homes → Merge into another… → Coastal Homes Pty Ltd. All three of its jobs now total under one client in Reports.