How to display hidden text when mouse hovers over it?

[vysim1]

Dear all,

I am trying to figure out which tool to use to have an icon "i" and have the hidden text pop up when I hover my mouse over the "i" icon?

[dplr-rn]

you will need custom extensions i think. check below
https://community.qlik.com/t5/Qlik-Sense-App-Development/Custom-pop-up-message-at-charts/td-p/928610