Finding user changes

Once upon a time, I was shown a way to get in to the background of the system and actually look at what users made changes to things.
For instance, if I want to look at what user created an invoice, or who made a change to an inventory count or a BOM.
Am I recalling something incorrectly, or is there a place for me to go and view things like this?

Thank you

A couple of those things may show a user who made the change on various reports. For instance inventory activity would show the user who did an inventory adjustment.

For the ones where we don’t show it somewhere more explicit, you can use the usage logs to find user activity all over the system: Can I use the Usage Log to see who made changes to an order?

That’s exactly what I was looking for, thank you