The following functions will output links as described below.
If the post is not part of a series (as defined by the custom fields), the template tags will not display anything; so it’s safe to add these tags to your default template(s). If the plugin is deactivated, you will need to remove or comment out these tags.
Or you can use a construction such as this:
displays a link to the previous post in the series, if there is one. If the current post is the first post in the series, this template tag will not display anything.
displays a link to the next post in the series, if there is one. If the current post is the last post in the series, this template tag will not display anything.
displays a list of links to each post in the series. The current post is not linked, to ensure the reader knows where in the series they are.
displays each post’s title as a clickable link to that post, as
displays a list of each unique series, listed by series name with a link to the first post in each series.