The entire fee shall be paid to a tenant who is the only such tenant in an apartment unit. Where an apartment unit is occupied by two (2) or more tenants, payment may be prorated among such tenants, or payment may be made to one tenant, provided all the adult occupants of the apartment unit have signed a stipulation to judgment as described in subsection 4-5-604A of this chapter. In no event shall a landlord be liable to pay a total amount more than the fee required by section 4-5-605 of this chapter for one apartment unit to all the tenants in any one apartment unit. (1962 Code § 11-6.03)