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So (G).(F)@myvo.org might generate Albert.Einstein@myvo.org. To use initials instead of a full name, simply limit the length of the name to 1 character. (g:1).(f)@myvo.org would generate a.einstein@myvo.org instead.
As of Registry v3.3.0, existing identifiers can be embedded in the format string, using the parameter (I/name) where name is the alphanumeric name of the Extended Type (not the display name), for example (I/uid)@myvo.org. Note that an identifier of the specified type must already exist or the Identifier Assignment will fail. Also as of Registry v3.3.0, Identifier Assignments can be ordered, so it is possible to ensure that the first identifier is generated before the second identifier that uses it.
Note that while a length specifier for (#) specifies a fixed width padded with zeros, when used with name-based parameters such as (G), the length specifier indicates a maximum width.
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As of Registry v3.3.0, assigning identifiers for all CO People (via CO > Configuration > Identifier Assignments > Autogenerate Identifiers For All) will schedule a Registry Job using the Identifier Assignment Job Plugin. (Prior to Registry v3.3.0, identifier assignment for all CO People ran synchronously upon request.)
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