There are a lot of roles the legal support person can fill. Below are some examples. Don't feel like you're disqualified if you can't do them all. Just let your affinity (or wider) group know your limits so they can plan ahead and maybe someone else can help be the legal support person with you.
The Legal support person info sheet may be useful too - you can print it out and use it for each person in your group. Please keep these forms confidential and return them to the individual or hand them on to their lawyer if they request.
Download Legal support person info sheet pro-forma at Support team resources