Phishing Simulation Training with Teams?

Hey all,

while setting up some Exchange Online Phishing Simulation Training, I saw the (greyd-out) option to use a teams payload when it comes to setting up a phishing simulation. I didnt find any very useful articles, why this is greyed out. Business Premium+ Defender and Purview Suite for BP is licensed. How do I set this up and configure it? Does this also support all types of attacks (Credital harvest, ...)

I'd be happy for any recommendations!

BR

Schnittlauch