"Alert Monitor- Alert List " is blank in AMS Device Manager: Please help

I am an E & IC Intern researching into the capabilities of AMS Device Manager in a Chemical plant. Having read about Alert Monitor and its functions, I decided to check it out in one of the Pro and ProPlus stations. I discovered that there were no data at all in the Alert Monitor-Alert List screen.  From the research I made online, I observed that the Alert Monitor-Alert List screen ought to look like what I  paste below:

                                   

However, the real situation at the Pro and ProPlus station at my end( image at the right) has no value( I mean no alert at all) ; every thing is blank. How can I enable the Alert Monitor, please.