How to archive messages using Iphone Facebook app?

Step by step please

Instructions
1
Tap the "Facebook" icon on your iPhone.

2
Tap the Settings icon in the upper left corner of the Facebook application. The Settings icon contains nine white squares.

3
Tap the "Messages" icon.

4
Select the Facebook message that you want to delete.

5
Press the forward icon at the top right corner of the Facebook application. The forward icon displays a right facing arrow inside a box.

6
Tap the "Archive" button to delete the Facebook message from your inbox.