Group Interfaces in Policy to not lose interface pair view?

I need a policy that allows traffic from a load of subnets coming in via a load of ipsec tunnels to access one server with one service. I can build an address group that contains all those subnets and use it in the policy but how about the source interface?

If I set this to "any" the policy will work but I lose the interface pair view in gui which is a bad thing if you have over 1,5k of policies. Is there any way to create a "group" of interfaces to set that as source in the policy in order not to lose pair view?

Also that would enable me to reduce the number of policies on this Fortigate a load :)