In Probate proceedings, after a caveat is filed how do the proceedings proceed?

Proceedings subsequently to the filling  of caveat  are  governed by section 59  of the Probate and Administration Ordinance, 1961, Act No.  35/1961.  Proceedings shall  not  be taken  on petition for probate or  letters  of administration after  caveat is filed  against either  of the two.  A person who petitioned for  grant  of  Probate or letters of administration will  be required to apply for  the issue  of citation to caveator  calling  upon him  to state within a  specified time  whether  he  supports the grant  of probate or  letters of administration to the petitioner  and if, he  does not,  require him to enter  an  appearance  to the petition.  If  the caveator  enters appearance, the court shall  proceed  with the petition in accordance  with the provision of section 52(b) of  the  Act.  i.e. the proceedings shall  be dealt  with as if  it  is a  suit  that  is, petitioner will  be plaintiff  and the person opposing  proceedings will  be defendant.