The List Feature comes in handy when you want to Like or comment on posts of specific accounts from a list. This is useful to automate Engagement group activity. You can also dm a list of people automatically.
Under Create a list you can select what actions you want to do like/comment/dm,
Copy and paste your list under targets or type in your list by hand.
Under delay you can delay your list that would otherwise start immediately once you press start in the bottom right corner.
For example if you set delay for 30 minutes then the first action from the list will be performed 30 minutes after you press start.
Under duration you can set in what timeframe do you want to like/comment/dm everyone on the list.
For example if you set a delay of 30 min and a duration of 60 min and hit start at 10:00 PM then liking/commenting/dm will start 10:30PM and will be finished at 11:30PM.
Liking and commenting is always done on the most recent post of a given account.