G1-d: Subjects with or, nor, either . . . or, or neither . . . nor
G1-dWith subjects joined with or or nor (or with either...or or neither...nor), make the verb agree with the part of the subject nearer to the verb.
The verb must be matched with the part of the subject closer to it: child has in the first sentence, managers were in the second.
note: If one part of the subject is singular and the other is plural, put the plural one last to avoid awkwardness.