How to replace existing symbol on the drawing with different ones?

Hi everyone, new user for QElectroTech here. First of all - many thanks for this great software. I really like it.

I have been using this lately - but come across something basic which I could not figure out how to solve. I have tried to google search but nothing relevant appears to come out - or my googling skills are just bad.

Essentially I want to know - say i have dropped in a 4pole circuit breaker - and i have drawn all the connecting lines, how do i change the symbol to something else - say a 3pole circuit breaker?

At the moment i will have to delete the 4pole circuit breaker and all associated lines - drop in a 3pole CB and then redraw all the connecting lines.

Just wondering if i could just swap out the symbol to something else?

Thanks