Using Roon as just an audio player

I have Roon setup at home computer as primary core. I would like to use Roon as just a player for my office computer when I am in office. It does not let me do that. Is there any way I can do this?

I believe you are asking if you can use roon when you are at home and in the office when you are there but only use one license?
See
https://kb.roonlabs.com/How_many_licenses_do_I_need%3F

I use roon at home and at work. I just unauthorize the other core when switching.