Can anyone share their experience with combining working and owning a cavalier? what do you do with them when you go to work? Ideally they would like to be with their owner every minute, but when you do have to go to work, what would the max number of hours per day that a cavalier can be left alone and still be a happy dog?

I have had my cavalier for almost 3 months now. I can take her with me to work sometimes, which is not ideal.

Also, I was advised to leave her at home in a closed area, rather than in the garden. Any idea why? it feels to me like it would be more interesting for her to be in the garden. Your thoughts and experience would be helpful. Thanks.