Question:
Can I create custom column spacing or are the available options all I have to choose from? I would think that two medium columns with one smaller sidebar column would be somewhat standard but I don’t see that available.
Answer:
You can do this as here (just note that it will apply to all columns on a page) as show in the video below:
You may also find changing the margins and padding for rows and elements to be more useful to you:
https://kb.imsuccesscenter.com/kb/pbv2-change-padding-margin-elements-rows/