Running the code and using multiple cores requires a dev version of Oscar. If you use the project.toml (instructions below) this should get you the right version. This is subject to change soonish once the changes get approved and merged into master.
julia> ]
pkg> activate .
pkg> instantiate
julia> include("MultigradedImplicitization.jl")
Running script will run a parallel computation using n_cores (currently set to 8) once computation is done, the script saves to file named kernel.json.