Some people want an organization to be clearly delineated. I do A and you do B. I’m in charge of X and you are in charge of Y.
The reality is most organizations are more like amoebas. They adapt when needed and are constantly changing shapes.
The ability to be flexible is what frequently separates successful from unsuccessful. Being willing to change on the fly can make you different from the rest.
Be willing to adapt, be flexible and be amoeba like. It might make you invaluable.
Have a great day!