Venu 3 cannot create watch faces

On Venu 3 Manual says new Watch faces can be created by holding the "B" button so that the + sign is shown to perform the action

https://www8.garmin.com/manuals/webhelp/GUID-9CC4A873-E034-4A06-B2E0-636DCFE760EE/EN-US/GUID-71137CA2-0AD3-4249-A8EC-7628AC5069FE.html

Doing it, the Info page is shown, so no + sign appears, but for all available watch faces, and new watch faces cannot be created

Any help?

thanks