If you are thinking about creating a new museum or remodeling one, a museum study can act as a guide to all steps towards the completion of a project and ideally it should be commissioned as early as possible. It can also act as a tool for fundraising. For new museums, ideally a museologist/ museum studies team should be included in the planning team along with the architect/ architecture team.
Usually, the aim of a museum study is to design the main concept (what differentiates it from other museums), themes and main narrative of each museum. It also maps the visitor journey (how the visitor will move inside the museum), content and design of each gallery space, and possible new technologies used for each theme/room. Finally, it provides guidelines for the architect, electrical engineer, graphic designer, and museographer of the project, as well as a detailed timetable and budget for the next steps.
For more information on what does a museum study include, its duration and cost, please consult this pdf document:
What is a museum study