An organism has two pairs of chromosomes (i.e.,chromosome number $= 4$). Diagrammatically represent the chromosomal arrangement during different phases of meiosis-$II$.

(N/A) $\Rightarrow$ Meiosis-$II$ is an equational division similar to mitosis,where the number of chromosomes remains the same as in the parent cell of this phase (haploid,$n=2$).
$\Rightarrow$ Prophase-$II$: The nuclear membrane disappears,and chromosomes become compact. Each chromosome consists of two sister chromatids attached at the centromere.
$\Rightarrow$ Metaphase-$II$: The chromosomes align at the equatorial plate. Microtubules from opposite poles of the spindle get attached to the kinetochores of sister chromatids.
$\Rightarrow$ Anaphase-$II$: The centromere of each chromosome splits,allowing the sister chromatids to move toward opposite poles. These are now referred to as individual chromosomes.
$\Rightarrow$ Telophase-$II$: The chromosomes arrive at the poles,and the nuclear envelope reforms around each set of chromosomes,resulting in four haploid daughter cells.