How to set limit product upload

Good day,

We are using using WCFM for our vendors to upload products, and see that they have unlimited products to upload (see this image). We would like to know how we can set this limit? Is it in the back end?

We also need to set the limit based on what level of membership they have purchased. We are using Paid Memberships Pro and need it to relate to that role.

Please help. Thanks!

PicFLick