Overstepping Chair of Trustees

A charity I support is being somewhat cripped operationally by an over-zealous trustee especially since they became Chair a few months ago for example they will not allow interviews to a role to take place until a certain quota of applications are received where this charity would like to see good applicants as their CVs arrive.

What can the charity's staff do if anything, about this situation which is becoming quite soul destroying for them?

TIA