What can you and can't you do with an apple watch that has activation lock

My first question is what can you do and what can't you do with an apple watch with an activation lock.

My second question is how can I unpair the watch since the phone is a different location (I'm in South Africa and my brother is in New York with my phone). Is it possible to remove it from iCloud.com

I have to give the watch back to my work since I'm leaving but I can't unpair it. I also don't want to give them a watch with all my personal information on it.