Behind (a little to their right) initially to observe them, give them feedback and give them reassurance
In front to show them your position/communication/observations asking them to follow your line
Behind and to their left to observe them make independent decisions
Mix it up.
Ask them if they're happy to do the communication stuff with drivers behind them
Both
Behind (a little to their right) initially to observe them, give them feedback and give them reassurance
In front to show them your position/communication/observations asking them to follow your line
Behind and to their left to observe them make independent decisions
Mix it up.
Ask them if they're happy to do the communication stuff with drivers behind them