E-commerce Operator GST Registration

One of our client is going to start  drop-shipping business. They will be collecting goods from the vendors, as per the orders received from the customers, and supplying to the customers. The goods will be procured from Indian vendors and the same will be dispatched to customers in India and abroad.

Please advise if my client needs to apply for GST Registration as Tax Collector (E-commerce operator).

She also provides business management services under the same business name. Do we need to apply for separate GST as Tax Payer or it will be the same applied as Tax Collector.

Thanks