The seven-time world champion was handed the loosely-deified role of “super assistant” following his retirement from racing at the end of 2006 and attended several grands prix in that capacity last season.
But it wasnt until the pre-Christmas tests when the German made a clearer contribution when he got back behind the wheel to help with the team's winter programme.
And the 39-year-old has confirmed he will continue to play an active role in the teams development of its cars, although no dates for his next test have yet been pencilled in.
“We have taken a while to determine this, but now my role within Ferrari is clear,” he told Italys Gazzetta dello Sport newspaper.
“We had to see where my presence would be most useful.
“I will be dealing with the development of the car within the Gestione Sportiva [Ferrari's motorsport division].
“We havent yet scheduled the dates when I will drive the car first-hand; nothing is decided.
“We will take a view on that depending on the situation: If the team need me to drive I'd be happy to, but not too often.”
Schumachers next appearance on a test track will come in Ferraris new F2008 car, which Kimi Raikkonen drove for the first time on Monday.
The legend says first impressions of the challenger have been good, but that it is far too early to come to any firm conclusions about its relative competitiveness.
“The car is promising, but it is not yet in its definitive configuration,” he said.
“In order to give a reliable assessment we must see what the competition has done.”