Please check the below:
Click on Tool tip of the sheet which you want to show the tool tip -> you can see Insert option and select the sheet which you want to show in Tool Tip. I have inserted the Sheet 2 in the tool tip of Sheet 1.
Hope it helps.
VizinToolTip_V10.5.twbx 1.2 MB
just to remember, it´s just possible for 10.5 or later.
thank you sudheer and paulo