How to print without raft ? (Preform 2.20 + Form1+)

UPDATE

The “On Build Platform” feature I’m talking about has been introduced on release 2.18.0 as stated here : https://support.formlabs.com/s/article/Older-preform-releases?language=fr#2018

And it’s also described in this post : Improvements in Printing on build platform

So I downloaded and installed V2.18.0 instead.
But I still don’t see that “On Build Platform” feature/button.

I’d like to know if other users have this same problem or if they do have this option.
If someone has this option available, could you please tell me wich version you are using ?

Thanks.

EDITED

If I choose “Form2” as my printer then this feature appears on the “Supports” window.
But it isn’t available if I choose Form1 or Form1+.
Which means that the description found here for V2.18.0 and Form1 / Form1+ isn’t correct : https://support.formlabs.com/s/article/Older-preform-releases?language=fr#2018
And the other link to a pdf document that I posted previously also seems to be wrong when describing this feature for Form1+.

I lost a lot of time at trying to understand why I couldn’t see this feature in my Preform release and I think these false informations should be corrected to avoid others to loose their time at installing and trying several Preform release before they realize this feature isn’t available for Form1 family printers.
I hope it will be corrected…