Debug mode access

I am looking at the debug mode post and I do not understand the following paragraphs

"The SSH keys for which public keys are attached for a project..."

Q: Does this mean that you add the public key to the Deployment?

Once a debug SSH (.pub) key is set on a project that is deployed to a PLT, the debug mode can be activated by an Administrator from the Reset section of the PLT view in

Q: I could not find this option inside PLTcloud. Can you show me a screenshot?