How to convert superscript numbers (of a character style) of a book to footnotes and link them

Hi,

I have imported Pagemaker file with no styles in it to Indesign.  It has a lot of footnote numbers and references to it but it doesn't link since it needs to be converted to be ideal for ePub and for Print.

I need to convert the reference numbers (1, 2, 3... in a separate character style now) in the body text to link to the reference numbers (1, 2, 3...) with Endnotes texts/bible references (at the end of the book which has a separate character style for the numbers and paragraph style for the texts followed by it) which needs to be linked and to be nested below each page like footnotes for the corresponding footnote numbers on each page or like a center-column reference in a Bible (between 2 columns). 

Can someone kindly help! Thank you.