HSRP (Hot Standby Routing Protocol)

Hi,

I have 2 router and both has a port-channel and then port channel has 3 sub interface. port-channel on both routers have 3 sub-interface which is for a different vlan coming from switch.

now i want to config hsrp between 2 routers. My doubt is :

do I config port channel this way

standby 1 ip <>
standby 2 ip <>
standby 3 ip <>

OR DO I config 3 sub-interface this way

standby 1 ip <> on first sub-interface
standby 2 ip <> on first sub-interface
standby 3 ip <> on first sub-interface

I am also getting a warning " address is not within a subnet on this interface "
"
is it just a warning or hsrp wont work in this case ?