For example, a format that says “%.6u” would generate six-digit numbers padded with zeros: 001234.
% indicates the start of the number definition.
.6 indicates that the numbers should have six digits. Numbers with less than six digits will be padded with zeros.
u indicates that the number is an unsigned integer (that is, it cannot be a negative number).

Never prompt the date required on a requisition: The Date required box is blank by default when a requisition is created.
Always prompt the date required on a requisition: The system fills in a date required by counting from today’s date the entered number of days into the future. If you enter “0”, the system will enter today’s date.

Manually: The system will not set a default buyer on purchase demands. A buyer must be set manually for each purchase demand.
By the System: The system sets a buyer on each purchase demand either using the buyer setting on each resource, or the buyer setting for the site.

Based on the resource being purchased: Different buyers are responsible for each resource in the catalog. If you choose resource assignment and a resource does not have a buyer assigned, or you are purchasing a non-catalog resource, the system uses the site’s buyer.
Based on location: A buyer has responsibility for the entire site. If you choose site assignment, and the current site doesn’t have a site buyer, the system looks up the site hierarchy until it finds a site buyer.