There are a couple of new options that I think will let you do what you want to do.
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There is now an option (under "Show options" at the bottom) to set whether the given name is displayed before or after the surname.
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You can also assign a Nickname. The nickname appears in quotes after the given name. You get to the nickname field (as well as Title and Suffix) by clicking the triangle toggle after Name.
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You also have (again, under show options) a more fine grained control over what names are displayed on your family tree.