Because Lightroom CC is a new program starting from ground 0. Tethered shooting is not an option that has been provided for ANY camera yet. It may be added in the future, but that has not been nor will it ever be announced in advance. You will have to watch Lightroom CC grow and mature and see what is added in the future. When and if your camera is added for tethered support is something that you will simply have to wait and see if it happens.
Oh gosh.... Thank you Jim...
would you know another way to shoot tethered ?? Not very professional looking with clients on site... brand new laptop and that damn CC is not up to our needs obviously...
I have never shot tethered. My camera has that capability, and Lightroom supports it (Lightroom Classic CC) but I have never ventured into that realm. According to the list of supported cameras, Lightroom Classic CC does support tethered shooting for your camera. Not every camera is supported for tethered shooting. In fact, the list is really quite short. So if that is something that is a high priority you should consider your equipment purchases carefully. Here is a link to a list of cameras that are supported for tethered shooting and Lightroom as well as what version is required at a minimum to have tethered shooting:
Yes you would need to be running Lightroom Classic-CC (the "Desktop" version of Lightroom) or any version higher than v3 - see Jim's link above.
I have used tethering with a Nikon D750 very successfully. Several demonstration 'Portrait' workshops with laptop screened to a projector and large screen. Also a wedding photo booth- guests took their own photo with a remote trigger and images appeared (within 5 secs) as Full-screen on a monitor.
Thank you very much for your help guys.
I have installed LR CC Classic and it works now just fine
Thank you again so much !