I would like to create a new case for function instead of 2.

When using the case function plugin in the custom functions plugin, it only creates 2 cases as default. I cannot get any information about to how I can create a new case for the function. Is there a general guide or forum post to how I can do this? I searched for over an hour now trying to find solutions but to no avail. Thank you, I just started using SMath so I don't know it well yet.

For add a new case use two times your argument separator (comma or semicolon):

Wrote

about to how I can create a new case for the function

Native cases is single condition.
On the right most place holder, click twice your argument separator.
You have added two conditions.
Keep clicking twice ,,, to add as many as you need.