Allow creation of flow of type fixed_start and fixed_end in the user interface
Allow creation of flow of type fixed_start and fixed_end in the user interface

frePPLe/frePPLe,frePPLe/frePPLe,frePPLe/frePPLe,frePPLe/frePPLe,frePPLe/frePPLe,frePPLe/frePPLe