I have configured a one year fixed membership type. The membership renewal period has been fixed 3 month before the end of the current year.
When a member fills up the membership signup form, his membership is automatically renewed for one year, even if is not the renewal period.
Thus, if a member filled up several times the sign up form, one year is added to his membership time.
Is it possible to force membership only for the current year, except during the renewal period which include the next year?