DE-concatenate a String at a particular index in a List of Strings

Hi.

I have a requirement to get characters from a String at a particular index in a List of Strings and replace semicolon (;) with a comma (,)

Let's say for example we have a list of strings with only one value at index1:  {"Bob; Troy; Victor"}

Required output: {"Bob", "Troy", "Victor"}

Is there a way to iterate individual string characters at a particular index and replace semicolon (;) with a comma (,)

Thanks!