Consider a sequential process with $3$ stations. The processing time $($minutes per unit by $1$ employee$)$ and number employees at each station are as follows:

$\backslash$table$[[,$Processing time,Number of Employees$],[$Station A:$,4mi\frac{n}{?}$ unit,$6$ employees$],[$Station B:$,2mi\frac{n}{?}$ unit,$2$ employees$],[$tion C$,6mi\frac{n}{?}$ unit,$3$ employe$]]$