What experience do you have using team-based messaging applications?
There are many options for communication software and messaging applications. Give the interviewer a brief overview of the apps you have experience using and assure them that you can learn their internal system, should it be new to you.
"I have used a variety of team-based messaging applications. I am best versed in Brosix, AOL Instant Messenger, and Freedcamp. No matter which system you use, I am sure I can pick it up very quickly."
"I have not used team-based messaging applications in my past positions; however, I am very technically savvy and experienced with multiple programs such as A, B, and C. I look forward to learning your systems as well!"
