a$)$ Explain event$-$scheduling$/$time$-$advance algorithm with an appropriate example.

b$)$ The daily demand data of a slow$-$moving item is collected for the past two months as

$(10)$

follows:

$\backslash$table$[[$Daily demand,$0,1,2,3,4],[$Frequency$,32,15,9,5,3]]$

Develop and test an appropriate input model.