(a) Agencies must establish policies and procedures governing this part including:

1. (1) When the agency will authorize payment;
2. (2) Who will determine whether payment is appropriate;
3. (3) How and when reimbursements will be paid;
4. (4) Which locations meet the criteria of this part for isolated official station at which conditions exist for allowing extended storage at Government expense for some or all employees; and
5. (5) Who will determine the duration and place of extended storage.