In the Sales & Purchases Information window, which is found in the Lists menu, you can add or edit entries that appear in the Select from Lists for the following Sales windows' fields:
Comments Tab
Field Name in Sales window:
Comments
Appears in Layout Types:
Service, Item, Professional, Time Billing
Shipping Methods
Field Name in Sales window:
Ship Via
Appears in Layout Types:
Service, Item
Referrals
Field Name in Sales window:
Referral Source
Appears in Layout Types:
All
Payment Methods
Field Name in Sales window:
Payment Method
Appears in Layout Types:
All
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