Need your advice - suppliers to create their own product variants

[Ash110]

Hi all,

I'm selling tickets on my Shopify store (as products) and I will be selling lots of different event tickets, ran by different companies (with other variables). I would like each supplier for the event to be able to manage their own product variants such as the date of the event, how many tickets are available, set the expiry date & time (such as 2 hours before the event so users can't buy them at the last minute).

Is there an app that will allow suppliers to log in, create, edit and delete product variants and then post them live to my shop?

Thanks in advance,

Ash