iMessage notifications do not come through to the Apple Watch when I'm using my MacBook Pro?

[SSD-GUY]

Hi all

I bought the Apple Watch (Series 3) to quickly glance at notifications whilst at work, as I can't always be looking at my phone.

My workplace allows us to BYOD so I use my MBP, however I've noticed that the Apple Watch:

• Vibrate to show that a message has arrived if I'm using my MBP, the notification red dot on the Apple Watch doesn't turn on either.
• Sometimes if I get a message on my MBP, that I can also see on my iPhone, this message won't appear on my Apple Watch list of messages on the messages app.
• (However, in the process of typing out this message on the MBP, I've seen the notification in the top right of the screen, and also a few seconds later, got a vibrate on my Apple Watch? But now, a few minutes later, an iMessage from my sister has arrived at the top-right of my MBP but has not caused my Apple Watch to vibrate)

I would like the Apple Watch to vibrate whilst I'm using the MBP as I don't always see the notification in the top right corner. I understand the Apple Watch not vibrating when I'm using my iPhone, however I would love to be able to receive vibrate notifications on my Apple Watch whilst working on my MBP.

Thanks