The Institute does not currently have a formal system in place for assigning mentors to students. Historically this resulted in poor experiences as few students were ready for the commitment being an apprentice required. Instead we choose to allow these relationships to occur organically. If you are interested in a mentor, work hard. Prove you are dedicated by being active on the forum and in your training. We will notice your hard work. In time a faculty member or senior member may take an interest in training you further and approach you. If this happens remember you are under no obligation to say yes. It is equally important that the mentor and apprentice are comfortable in the arrangement.
If you have been active for some time and find yourself wanting to work with someone more, you may ask them. Just remember to be respectful and to not take it personally if they say no, or if they ask you for more information or time before deciding. Training a Jedi is a big responsibility. If a mentor already has an apprentice or is very busy with other duties they may not have time for a new apprentice, even if they would like to train them. Don’t lose hope. Continue utilizing the resources around you. When the time is right everything will fall into place. Trust the Force in this matter.