Hello,
I did not know that you're already using Multi-Vendor 4.12.1 version.
In Multi-Vendor 4.12.1, vendors are unable to create options anymore. However, after enabling checkbox "Allow vendors to manage product features" (tab Settings -> Vendors), they are able to create features. Using features, vendors are able to create variations that serve similar purpose as options.
Options in general are deprecated functionality and they shouldn't be used anymore in new stores.
Best regards,
Robert
Team of SoftSolid
cs-cart.pl | marketplace | Multi-Vendor/CS-Cart Development | Dedicated developers
We specialize in creating the highest quality addons, safe, useful and flexible