On the  event overview page,   there are all  the possible options to be set for an event   such as Published,   Draft, test, Make it Live and so on.  Among these , there is an option named  "Custom". Once this is selected,  a popup comes out that allows you to enter the text message that has to be  displayed. Once this is done,  on the  event  landing page,  but will become  inactive and the added message will show up.  

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