Each user can only manage system message subscriptions for their own account, so your colleague has to do it themselves.
If you have the Merchant user management user role, you can see which system message subscriptions are active on someone else’s account on their User settings page.
For more information and to understand how to change these subscriptions on your own user account, refer to Subscribe to system messages.
Setup system messages in the Customer Area
To receive system messages to an email address, please watch the video below;