WebSSH webtop limitations

Hey all - for WebSSH implementation to support using F5 as SSH JumpBox via webtop. Can the webtop allow end-user enter his OWN IP where they want to SSH into? Like a native RDP webtop would? Or is this limited to only one-to-one per WebSSH icon?

Also - does this work on 14.x or only 15.x plus? I can't seem any references.

Thank you!