Dispute resolution requests provides a central compilation of and an easy-access overview for Wikipedia:Dispute resolution (WP:DR), and details the various different methods used at each of the Wikipedia WP:DR requests pages
Remember - All content and conduct issues should be discussed at either the article or user talk pages before requesting dispute resolution.
Request comments from users regarding the problematic behavior of a specific editor who may have violated policies and guidelines.
Apply to the Arbitration Committee for an examination and binding decision regarding a long standing issue of mis-conduct after all other avenues of dispute resolution have been exhausted. Or request enforcement against a user who you feel is acting in breach of the remedies described in a closed arbitration case.