Tell us what’s happening:
As per this link although I created a bank toggle switch I don’t know what is it used for? It doesn’t say anything about it in challenge description…could anyone please tell me
Yeah, that’s not a specific requirement for the project, though no harm in embellishing your project with whatever you like!
The bank switch in that project simply switches to a different sound bank, so you have additional sound options (above and beyond what is required for the project).