You can expand this layout to take full monitor width by pressing the three dots menu and going into Fullscreen mode (it’s not preserved when you reload the doc though or when you need to navigate away).
Also if the task name and duration are not meant to be edited there, you can just concatenate them into a multi-line text.
I think you can also concatenate the button to appear beneath the Project Stage with some tricks. Make a separate column where you Concatenate([Project Stage], Character(10), Button([Make Booking], "Make Booking", "Green")
and group on that:
More on the Button()
formula in the video in this thread: