Volunteering to help grow the Association is not an onerous task. Work groups are a time-sensitive commitment, usually short in duration, which allow interested members to help develop a strategy/plan in a priority area. You may have specialised skills that the BLA could call on from time to time. You may be simply interested in helping out when an activity is being planned/held. You may even want to be part of the Board of Directors (you have until the spring of 2019 to think about this one).
To volunteer, simply send an email to firstname.lastname@example.org and let me know what you will accept as a commitment.