How can I edit the time frame after launching a campaign?

To edit the time frame, you have to follow these steps:

Go into your Facebook Ads Manager
Go to the "Adsets" section
Select all the adsets from the campaign
Then select "Edit" button



The edit window will open from the right-hand side.
You will see the Budget & Schedule option, where you would be able to change the end date.
Press "Publish" button and your ads will update.

Updated on: 10 / 10 / 2019