Groves said he, assistant manager Zeljko Petrovic and first-team coach Kevin Keen all shared the burden on the day.
He told whufc.com: "The responsibility gets shared amongst us all, there is Zeljko and don't forget Kevin Keen. He is a big part of the set-up.
"Things were covered [by the manager] going into the game. You are prepared as much as you possibly can. You have to react different situations. I was speaking to Kevin and to Zeljko. We pooled our knowledge and you try to make the right decisions."