The reposting window allows you to upload existing posts (from you or other profiles) by ensuring the original author is attributed.
To repost a post:
Right-click any post, then select
Repost [Photo|Video|Carousel Post]… from the contextual menu.
When reposting a post, you can adjust a few settings. If you are reposting a post from a profile that you have logged in with, you will be able to also make editing adjustments and choose a filter. When you are reposting content that you did not create, or do not have source access to, the adjustments and filter settings will not be displayed.
This attribution option adds a small banner which includes the original author's avatar image and their username. The banner position (including off) and banner background colour can be customised.
The caption that the author originally used is appended to the end of your repost caption. This does not remove the
#repost @username text. If you wish to remove this text, you must do so manually, however one of the other author attribution methods must be used.
The original author of the post is tagged into the post, in the center of the post. To adjust the position of the tag, see tagging users.