Yes. Students may invite an advisor to attend the Initial Conference. An advisor can be anyone of your choosing. Sometimes students invite their parents to come with them. If the allegations are sufficiently serious, they may also seek the help of an attorney.
Although an advisor can attend the Initial Conference, the accused student will still be expected to participate in the meeting. In fact, the advisor is there to provide advice and consultation - not to represent the student. This provision and practice exists because the conduct resolution process is intended to be educational and provide a learning opportunity for the student.