Who is sending the invoices through? It is the Committee Treasurer with an instruction to pay?
What is the delegated authority in the Agency Agreement?
As a strata manager I wouldn’t be paying random invoices sent in from owners however if I have an instruction from the Strata Committee then it’s my job to pay that invoice.
Some management software will allow for the Treasurer (or whomoever the committee appoints) to pay the invoices and remove the strata manager from the equation.