Walking past dogs and people without lunging

[JULIERALPH81]

Hi Everyone

We have put into place more mental stimulation for Scooby ( 7 month old labradoodle) and it is going well at the moment. Still a big thief but we are working on it!

I forgot to ask for advice on what to do when we are on a lead walk and another dog or even person is approaching. His immediate reaction is to lunge at them, not in an aggressive way at all, with people he wants them to fuss him and with dogs he wants to play with them.
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I had read somewhere that you can use other dogs and passers by as reinforcers? I think! ie get him to want a treat as he sees the other person/dog? Is this right or is there a better way to do it?

Thanks in advance