mandatory

And we have a few that are mandatory.

Using the vests is not mandatory but teams must fit the system to their cars to ensure any drivers not using them does not gain an advantage by having a lighter car.

A source clarified to E! that Urban was absent from his appointment due to his tour, adding that “it’s mandatory for applicants to be physically present in order to apply for the visa.”

They have already had experience of the government's Covid ID, which was used during the pandemic to show vaccination status and was mandatory to enter restaurants and bars.

Students 13 and older have conditional access that requires completion of mandatory training and “Responsible Use Policy” signatures from students and parents.