intercom function with 9133i

Is there a way to program a button to be an intercom button like on the 480i?

The PBX is set to use the *80 as the intercom, and if you dial *80+extension it works, but is there a way to program a key to do the *80 so all you have to do is press that button then dial the extension. I've tried speeddial and that does not work.

Thanks,
Bedrock