Yes. Database items can be assigned with custom fieldsets, including the information that populates each fieldset by default. To edit fieldset information for a database item:
Once the custom fields have been populated, when that item is added to a purchase order, you will see that there will be a "Custom Fields" column on the item with an option to click "Edit".
Once you click on "Edit" you will see the fieldset along with any prepopulated values.
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