If you want others to be notified when you want their attention, or if you’re asking them a question, you may want to use the @username tag in your posts. Example: @admin – This gives members a little notification on the top of the screen alerting them of the post. Most members have already gotten used to using the @username function.
One tip, if you don’t know what the person’s username is to use the @username tag, hover your mouse over their avatar in the post, it will display their username. You then stick a @ symbol and that username. If you have any questions/comments, post them up.