What would you check before promising a customer a volunteer scheduling solution?

Availability first, then the model, then the honest gaps.

1. Edition and licensing. Volunteer Management is not available in every edition, so I confirm what the customer actually has before it appears in a proposal.
2. Then the model: Job Position Shift represents the shift, tied to a job position and its recurrence schedules; Job Position Assignment places a specific person on a specific shift on a specific day; qualifications and person location availability support matching people to roles.
3. I would also check whether volunteers need self-service. Signing up for shifts themselves usually means an Experience Cloud site, which is a separate design and licensing conversation.
4. And I would be clear that volunteers are constituents, not Salesforce users. Provisioning user licences for a volunteer base is a cost mistake I have seen made more than once.