how do you add profile picture to your profile picture album in fb?

[4Rd]

I can see five photos right now and I would like to add more, but how do I add ?
Also..
How can I make only 1 visible and the rest invisible ?

[Mohamed]

to add photos to profile picture album you simply upload profile picture and when your done you go to a picture and choose the profile picture
about invisibility, profile picture are always public and cannot be hidden there is no way to hide any

Hope i helped