Hey, @Janeames. Welcome to the Photoshop Community. I'll help you figure this out.
You can pin the floating panels into the workspace to keep them open. The floating panels can collapse to give you more working area on the canvas.

Once you've set the panels to your liking, you can Lock the workspace from Window > Lock Workspace and save it from Window > New Workspace.

Let me know if this helps. Thanks!
Sameer K
(Use '@mention' to tag me when you reply)