You have to create vendor membership and setup different capabilities for those membership plans.
https://wordpress.org/plugins/wc-multivendor-membership/
You will also require WCFM Ultimate and WCFM Group and the premium addons for such setup.
If you need this additional plugin, why not install it by default?
Thanks
https://wordpress.org/plugins/wc-multivendor-membership/
It’s free plugin and auto-install during WCFM plugin installation and setup steps.
But premium addons can’t be install automatically. You have to purchase and install those manually.
Ok, I got it wrong.
I have that plugin installed, and I also set 3 plans but I don’t understand how to make them work.
IF I set that the Free plan can insert 5 products and the Gold plan 10 where I then set the number of products in such a way that if it has the Free plan and tries to enter the product number 6 gil gives an error?
Please check this – https://docs.wclovers.com/capability/
You have to setup plan wise capabilities.