Change PHP version with Nginx

[Steven_Verheij]

I am not sure, though it may have to do with this piece of information:

Use different version of PHP for specific directory?

Kindly note that this feature is available only in older versions of Virtualmin

While that topic is going for a php version for a specific path, it also mentions the option is to disappear, Who knows that may be the reason for no default version being marked / recognized in the configs.