Indiana Code Title 36. Local Government § 36-8-19-6.5

Sec. 6.5. (a) The legislative bodies of all participating units in a territory may agree to change the provider unit of the territory from one (1) participating unit to another participating unit.  To change the provider unit, the legislative body of each participating unit must adopt an ordinance (in the case of a county or municipality) or a resolution (in the case of a township or fire protection district) that agrees to and specifies the new provider unit.  The provider unit may not be changed unless all participating units agree on the participating unit that will become the new provider unit.  However, if the provider unit has adopted an ordinance or resolution under section 13 of this chapter to withdraw from the territory, a majority of the participating units that wish to remain in the territory and do not withdraw in accordance with section 13 of this chapter must agree on the participating unit that will become the new provider unit.  The participating units may not change the provider unit more than one (1) time in any year.

(b) The following apply to an ordinance or a resolution adopted under this section to change the provider unit of the territory: