To add a conditional logic to a resolver, from the three-line icon beside the appropriate resolver, select Add Condition. You can then add a comparison or named condition.

Screen capture of Resolver settings

In the following example, the service resolver Callsign.ApprovalResult applies only when the attribute PrimaryAccountHolder has a value of Confirmed.

Screen capture of Condition under the Resolver Type section of the Resolver Settings.

You can combine multiple conditions for a resolver using ALL, ANY, or NONE. To allow more permutations, create subgroups by clicking + Group.