Project End Date calculated by inputting Start Date and Duration versus inputting an End Date

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Has anyone made a customization where a user can enter a project start date and then enter in a duration and have the project end date populate/calculate? We are exploring this idea. We are trying to limit customizations and push back on a change of process. Figure I post on here to get some thoughts and experiences. A concern would be if any updates are push whether or not it will break anything.

Thanks in advance.