NEIL Harris and Scott Fitzgerald were drafted into Millwall's training session on Thursday as Ian Holloway ensured his players received "individual" coaching.
U21 manager Harris and academy chief Fitzgerald previously took temporary charge of the Lions before Holloway's appointment in January.
But they could now become more involved with the first team again after Holloway took the decision to "change things" in the build up to Saturday's visit to Derby.
"We've done a bit of specialised training," Holloway revealed. "I split up the team into units and gave them position-specific work.
"Marc Bircham took the midfielders and Scott Fitzgerald and I took the back four. I have moved Scott up to do some defensive work and I think he's perfect to do that.
"He'll give me a different voice.
"I've got a centre half, a midfielder and a striker on my coaching staff so I've changed things and implemented that."
Holloway received a glowing report from Harris on striker Lee Gregory, who scored his first Millwall goal against Birmingham in midweek.
"His movement was fantastic on Tuesday," Holloway added.
"I've watched the game back and there were so many of his runs that we didn't pick up. We chipped him through once but he couldn't quite bring it down.
"Yesterday, Chopper came running into me after the session and said Gregory was fantastic.
"It was a really clever goal he scored and then for Chopper to run up to me and praise him like that, it really says something."