minutes$/$unit and the preceding task$($s$)$ for tasks $A_1$dots,$J.$

$\backslash$table$[[$Task$,$Performance Time,Preceding Tasks$],[$A$,6,$NA$],[$B$,6,$A$],[$C$,9,$B$],[$D$,4,$B$],[$E$,3,$C$,$ D$],[$F$,13,$A$],[$G$,3,$F$],[$H$,3,$G$],[$I$,4,$E$,$ H$],[$J$,4,$I$]]$

The precedence network is:

The line will operate for $380$ minutes per shift. The desired shift output is at least $18$ units.

The configuration Station $1($ABC$)$; Station $2($DEF$)$; Station $3($GH$)$; Station $4($IJ$)$

$$

The configuration Station $1($ABF$)$; Station $2($CD$)$; Station $3($EGH$)$; Station $4($IJ$)$

The configuration Station $1($AFG$)$; Station $2($HIJ$)$; Station $3($BC$)$; Station $4($DE $$