Your genealogy chart was tiled (printed) over two or more pages.
Trim the top strip of the second and subsequent pages.
Cut along the dotted crop line.
If the chart had two or more columns, trim the left strip on the second and subsequent columns.
Apply glue to the bottom strip of the first page.
Press the top of the second page upon the glued bottom of the first page.
Repeat for third & all other pages.
If the chart has two or more columns, assemble each column first, then overlap the columns.