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1-Direct worker&supervisor
2-person in charge for this task
3- your self
4 combination
Usually i try first to grape information from my colleagues and Direct Supervisor and if i couldn't get it full , i will do my searches through the internet and my friends in the same field.
2-person in charge for this task
Depend on what his our requirement.
We can use the search engine
Ask to the co-workers on the information what we required on the work
Ask to the professional on the same field.
That depends on the task itself.
