"supporting step" is correct and usable in written English.
You can use it to refer to a single step or action that is taken in order to support another. For example, "We took a number of supporting steps to improve our customer service, such as hiring additional staff."
Parliamentarians have been duped twice into supporting steps necessary for a "war on terror".
While supporting "steps to enhance stability and protect against market abuse", the Treasury does not support European moves requiring HFT firms to hold equities for a minimum period.
Professional traders consistently support steps aimed at improving the integrity and performance of our modern electronic markets.
It was a safe place where very sick people could take their first supported steps towards wellness.
Mr. Hu emphasized that China would only support steps that enhanced dialogue and did not suggest any inclination to embrace Mr. Bush's idea.
For now, some experts said, the best the White House can do is to support steps to rebuild confidence on both sides.
This movement has supported steps like increasing the number of charter schools in the city and awarding merit pay for top-performing teachers.
In particular, the choreography for Clara and the Nutcracker as the grown-up Prince and Princess is intricate, bordering on overwrought, with numerous lifts, supported swoons, bravura supported steps and detailed characterization.
The environment supports steps from the generation of optimization models to the solution and the visualization on networks of computers.
Moreover, different structural intensity components of a simply supported stepped thickness plate are separately quantified, to assess their contribution to the total intensity.
