Shift assignment should be by day and time instead of by index

[nus-se-bot]

Currently, workers are assigned and unassigned to shifts by the index number. On the other hand, shifts are not sorted by day/time in the shift list This can create confusion for managers when trying to assign and unassign workers to and from shifts as they have to scroll through the list to find the shift index for the timeslot they are looking for.

This can be resolved by having workers assigned and unassigned to and from shifts by the shift day and time

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_{[original: nus-cs2103-AY2021S1/pe-interim#27]}

[wakululuu]

Team's Response

Identifying a worker/shift/role by their index is a feature inherited from AB3. Likewise, the person list in AB3 is not sorted.

This is also where shift-find can be used to easily filter the shifts instead of scrolling through the whole list. The typing of the shift-find command is likely to cause negligible inconvenience to our target user as they are fast typists, hence the bug severity has been dropped to low.

Duplicate status (if any):

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