Hi
try this
select the column where you want to have alerts
In my case we had selected a AMT where we have to give alerts
the go to Analysis -> Conditional -> New Rule
for eg we are provide a alter on amt less than 50
After that Select a Format
and Select the Background
in that select the Image from File: and load which image you want to display
to add more condition the select the Add
and add more alert to the column