Creating Footnote Styles

There are two different types of footnote styles.

The most common type is that a full citation appears in the footnote. The Chicago style is perhaps the best-known example of this type. Many styles only use a full citation the first time a work is referenced. After that either a Shortened citation or a cross reference is used (to learn more, see First footnote number). If a reference is cited two times in a row, the abbreviation "ibid" is often used.
Author-Date styles specify that the citation should appear in the text (this is the most common form) or in the footnotes.

Create a new Style. On the File menu, click Citation style properties.

Click Text citation.

Select a reference type, and drag the components you want to appear in the footnotes to the Rule set: Footnote. Format the components by double-clicking them.

Even if your style does not call for a bibliography, copy the components from the Footnote rule set to the Bibliography rule set. Citavi uses this rule set for the preview in the Reference Editor.
Select all components. On the Edit menu, click Copy. Select the Bibliography rule set. On the Edit menu, click Paste.

If your guidelines call for a Shortened form to be used when a reference is repeated, create additional templates in the Rule set: Footnote.

Repeat these steps for each reference type you need.