After doing a lot of digging, i found a solution

first, right click on your main project directory folder thingy, and click properties https://i.sstatic.net/jymk7xmF.png

then, you want to go into c/c++ https://i.sstatic.net/nuxGOd4P.png

after that, go into additional include directories and edit https://i.sstatic.net/E45T38EZ.png

last, you want to enter the directory of the folder containing your header file, for example $(SolutionDir)Dependencies\GLEW\include where solutiondir is the path to the main folder (in this case engine) and then we path to the folder containing the header https://i.sstatic.net/O9crjAl1.png

hope this helps