How to make nexes sections with rules

Sir, While reading the Act, any Act for  that matter,  sections may contain the phrase  as “in such manner as may be prescribed”. Kindly help me out as to how to find the relevant rule to that particular section, which means the Act may contain so many sections and the Rules book also contain so many rules, hence how do we correlate  one to one ie. particular relevant section with that of the particular relevant rule.