Did you mean PrimeFaces Growl or a tooltip? Tooltip is usually used for components that have the TITLE attribute to show a tooltip, usually above the mouse. You cannot add a hint to the event, but most likely a component like: a <p:commandButton or <p:graphicImage ..etc for events you better use <p:growl />.
Example:
<p:growl id="mygrowl" global="true" /> <p:commandButton actionListener="#{myBean.MyActionListener}" update="mygrowl" />.
Just see if there is a <p:schedule /> eventlistener attribute.
If you want to make sure: Add between
<p:tooltip global="true" /> <p:growl showDetail="false" showSummary="true" id="globalgrowl" life="3000"/>
Then
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