Create Huawei p8 lite folder?

Hello today wanted to create a folder for certain pictures and if I press on the picture on it longer I have the opportunity to move and bottom left is a button create folder but he is gray and can't select him what is the problem thank you in advance

Of course you have to make the folder beforehand.

Where do I do that because except as described in question, I saw nowhere such a button synonymous have seen a video on YouTube but there you could press on the box and create a folder

You're right, I just tried it. You're in files or.