Upselling involves motivating customers to buy a higher-end product that is comparable to the one they are considering. The Upsell Manager functionality enhances the sales and marketing endeavors by identifying prime opportunities for upselling specific items and pinpointing the ideal customers to focus on. This procedure is also referred to as product affinity analysis.
To activate the Upsell Manager feature, an administrator can navigate to Setup -> Enable Features -> CRM subtab. To upsell using the upsell manager, the navigation used is List -> Markteing -> Upsell manager.
Upsell items can also be designated within customer records or sales transactions.
Following are the steps of upselling-

Upselling can be executed either by focusing on a specific item or categories of items. In cases where the item or categories cannot be easily identified, the upselling approach will instead rely on analysing past purchase history.
Once the choice of the upsell item has been made, the subsequent phase involves defining the list of target customers among the customer base. Further criteria can be established, governing the manner in which the results are showcased. There is also the provision to omit certain customers from the list, and conversely, to validate the compiled customer list.
The subsequent step entails selecting the precise upsell action that the NetSuite system should undertake. The available upsell actions encompass the following options:
• Create a group of customers to upsell to
• Create tasks for the sales reps assigned to the upsell customers
• Schedule phone calls for each upsell customer
• Create opportunities for each upsell customer
Upon making the requisite selections, it’s essential to save the choices to finalize the process