The Creation Log Column adds the creator and date of creation for each item automatically!
To add it, click on the + icon located on the top right of your board and select "column center".
Once in the center, select the option "Creation Log" as in the screenshot below:
You column will automatically be populated with the avatar of the person who created each item and the date of creation.
If you have any further questions feel free to reach out to our customer success team at firstname.lastname@example.org. We are here for you 24/7.