Craig Brown will take charge of Motherwell for their next three games following the sacking of Jim Gannon for refusing to sign a contract.
The former Scotland manager, 69, and his assistant Archie Knox watched the players train on Tuesday morning.
Brown told BBC Scotland: "Our job is to maximise the potential of the team in the next three games."
But he was keen to point out that youth team coach Gordon Young will select the team to play Hearts on Wednesday.
No permanent appointment can be made at Fir Park until chairman John Boyle returns from a trip to Australia.
Brown added: "I got a call on Monday morning asking if I was available to come in the short term and look after things while they think about a new appointment. I said yes, on the condition that Archie could come and join me.
"The verbal agreement is to look after things for the three games coming.
"When the chairman comes back, they'll discuss the managerial situation but I don't envisage much longer, but we'll see what happens; we are happy to do the job in the meantime."
Brown, who began his managerial career with Clyde, spent eight years as Scotland's national coach but has been out of management since ending a two-year spell with Preston North End in 2004.
Former Aberdeen, Everton, Manchester United and Rangers assistant Knox had a more recent spell as a manager, being caretaker at Bolton Wanderers after Sammy Lee's departure in 2007.
Relations between the manager, staff and directors deteriorated to the extent that the situation became untenable
Motherwell chairman John Boyle
The former Scotland Under-21 manager was most recently first-team coach at Blackburn Rovers under Paul Ince.
"There is a lot of potential in the Motherwell team. Jim Gannon introduced some very good young players and we hope to maximise their potential," said the interim manager.
"We are both used to working with young players as well as experienced players so it will be a joy to have a couple of weeks working with the Motherwell youngsters."
Brown said he had yet to decide who would be in the dugout for the game against Hearts but was keen to credit the input of youth coach Young.
"Gordon will effectively select the team for Hearts. We've got to be honest and say if Motherwell are successful at Tynecastle, it will not be anything to do with us. Primarily, it will be Gordon Young in charge."
Knox, 62, said: "We'll work together as we did with Scotland back at the 2002 World Cup (qualifiers). I thoroughly enjoyed my time there with Craig and I'm sure I will here at Motherwell.
"There are a lot of good young lads and a lot of them have a bright future."
Motherwell's approach for Brown followed the surprise departure of Gannon, who had been in charge of the team for only six months.
The club stressed that the decision had nothing to do with the team having failed to record a win in their last six league games.
"Generally, results on the field have been satisfactory since Jim Gannon was appointed and the board wishes to make it clear that today's decision is not related in any way whatsoever to recent results," chairman John Boyle said in a statement.
"Over the past couple of months, it has become abundantly clear that the manager was not fully committed to the club and, despite our best efforts, he repeatedly refused to sign a contract.
"Relations between the manager, staff and directors deteriorated to the extent that the situation became untenable."
Former Aberdeen and Dunfermline manager Jimmy Calderwood, along with John Robertson, the former Inverness Caledonian Thistle, Hearts, Livingston and Derry City boss, had been among those immediately linked with the job at Fir Park.
However, Motherwell have instead turned to another unemployed former manager who has been recently working in the media and who had his most successful spell in international football nearly a decade ago.
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