All extension wide settings can be done at the configuration panel at the Joomla! configuration area.
Select "Logical-Arts Votes".

General Options
Default Foreground Color
Sets the color of the filled stars.
Default Background Color
Sets the color of the empty stars.
Show rating value
Shows the overall rating value as digit number.
Show total votes
Shows the number of votes as number.
Max Comment length
Sets the maximum number of characters allowed for a comment.
Default visible comments
Sets the maximum number of comments (latest first).
Min Rating
Sets the minimum rating to show. E.g. set to 2 means only comments with rating 2 or better will be shown.
Use Cookie
Sets a cookie after a user votes to prevent voting multiple times. Another vote can be done if the cookie no longer exists.

Mailer Options
Mail Comment
If eanabled, a mail is sent if a new comment was generated.
To name
The name of the email receipient.
To eMail
The email address of the email receipient.