Can a Harry Hall member authorise a 3rd party to discuss an account on their behalf?

Can a Harry Hall member authorise a 3rd party to discuss an account on their behalf?

Yes,

·    Members over the age of 18yrs must successfully undergo all security checks and then proceed to setting up a password for future 3rd party access.

·     Members under the age of 18yrs must have adult consent, therefore a parent or guardian must make contact