Putting Text anywhere on the page

Is it possible to put text or annotations between the staves? Anywhere on the page? It seems limited to only above or below the staff, or at least that is all that is documented. I’d like to do work like the attached. This is relatively easy in Sibelius as text can be dragged anywhere.

As far as I know, you can put text anywhere using the text frame:
Screen Shot 2018-08-03 at 06.16.47.png

If it is text that applies to a particular bar, rather than page location, then just use Shift-x, or Alt-Shift-x if you want it on every Layout, regardless of which staves appear.

You can then move the text item in engrave mode to where you want it.

Thanks for the suggestions. Just got back from an international trip and will put this to use!