You can associate a keyword with personnel. For example, if a catechist is also a youth group chaperon, you can "tag" them as such.
You can use this keyword when running reports. For example, if you need a list of all the youth group chaperons, you can run a listing report with an additional selection as follows:
Personnel Keyword.Description is equal to Youth Group Chaperon.
For more information on using keywords in conditions, see the Additional Selections tab on Select Records to Print.