When you set your status to away, a window will pop up; here, you can choose the status you want it to say.
In the ‘Name tag suffix’ option, type what you want instead of the simple ‘away’ status. Below that, you can choose something that will be auto-sent to your contact(s) if they message you.
The ‘Predefined…’ option are status’ premade for you. (You don’t choose that option if you want it to say “At McDonalds BBL”)
Example:
