755 ILCS 5/20-21

Joining with spouse of ward in sale or mortgage.) By leave of the court and upon such terms as the court directs, a representative of a ward may join in the execution and delivery of a deed or mortgage in the name of the ward or otherwise release or convey the right of the ward to homestead. Leave of court must be obtained in the same manner as nearly may be as in the case of leasing a ward's real estate.