Hi Paul,
Congratulations on your new radio.
You certainly can run two speakers at once should you wish and the details for such operations are explained in the user manual :-
Viewable online :-
https://www.hamradio.co.uk/pub/media/wysiwyg/B62-1221-50_English.pdf
or download from Kenwood :-
https://www.kenwood.eu/comm/amateur/hf_all_mode/TS-2000X/?view=support
Page 11 explains the connectivity on the rear panel and page 78 the menu settings to take advantage of different options.
I don't have such a wonderful radio so obviously no first hand experience of running such a setup. Hopefully someone else on the forum may have experience or you could let us know how you get on with it.
All the best,
Victor