Hi welcome to silkysteps. This is more to do with what happens to promote positive behaviour rather than manage or deal with incidents of extreme or otherwise challenging behaviour.
Behavioural theory links to this via positive & negative reinforcement, eg. reward charts, praise, consequences. Social learning theory examples role modelling and how you might observe adults and other children being calm, using their body language as well as their verbal/sign language during times of conflict which can be occasions where there's 1 toy with 2 children wanting it, pushing & line jumping on a climbing frame's steps/ladder, a child takes time to show you/another adult child what they're doing - how does that person respond & react?
The observation book is supportive reading if you can access a copy -
on amazon
Best wishes xx
CYP 3.5 develop positive relationships with children & young people
CYPOP 41 / HSC3045 - promote positive behaviour
Outcome 5 of CYP 3.2 promote development
Theorists -
outcome 2 of CYP 3.1 understand development