There is no specific time for a feasibility study because it benefits you every time you conduct it. Feasibility studies are used before opening a new branch, expanding in services or products, and sometimes before adding a new job to the company’s structure.
So, if you conduct a feasibility study, you may find that three employees could be one with simple and easy programming. Thus, you will save a lot of money.
So, my advice is to always conduct a feasibility study.