In case of successive actions being brought against any beneficiary, in which any portion of the beneficiary’s salary, stipend, or wages is sought to be sequestered, as provided herein, precedence shall be given by the garnishee to one whose process is first served upon the garnishee; and if two or more such processes are simultaneously served upon the garnishee, they shall be entitled to precedence in the order of the priority of their issue by the court or courts from which they respectively emanated, subject to section 653-16.