Additional place of business for ecommerce

Hi,

I am registered as tax collector ecommerce in gst.

I am now taking one shop on rent where I will be giving space to Manufacturer to sale goods offline. I will do billing on behalf of these Manufacturer. These Manufacturer have already added this shop as additional place of business in their GST.

I am tax collector ecommerce Registerd in gst I do not have option to add additional place of business. How I can do the same.

So as a offline marketplace I will generate bill on behalf of Manufacturer from My rented shop.

Thanks

Kiran Chandekar