Yes. You have the right to have someone of your choosing (generally an advocate, friend, or someone from the prosecutor's office) attend interviews with you, as long as there is no conflict. An example of a conflict would be that the person you wish to attend the interview is also a witness in the case. One thing to keep in mind, however, is that whoever attends the interview with you may become a witness at trial. If you have someone in mind that you want to attend the trial with you, it is best NOT to have that person attend the interview with you as well. In addition, that person may not interfere in the interview and is only there for your support.