Here are the steps to define "Field Sets" in Suite Commerce Advance web store

Field sets are defined for getting real time data from item record for different templates. Web developer can use Item search API to access field sets that we define.

Step 1:

 Go to >> Setup >> Suite Commerce Advanced >> Setup Website >> Click on edit

Step 2:

Click on “Field Set” Sub tab

• Enter the field set name
• Enter Field set ID
• Select the record type
• Enter the description
• Select the fields that need to be included in field set.
• New window will be open 

• Select  Field set name
• Field ID and Field type will be auto populated.
• Click on submit.