The Instabug SDK has an API that allows you to log custom user events.
More details about how to log these events can be found here. 

After logging events, you can see it in your bug and crash reports. 

For the bug reports, open the Bugs tab > select any bug > Scroll down in the bug details to the logs section and you can see all the logs, including the events:

For the crash reports, open the Crashes tab > select any crash > Click on View Occurrence button from the top right > Scroll down in the crash occurrence details to the logs section and you can see all the logs, including the events: