You must be logged in to the forum BEFORE you attempt to load to the gallery.
From the main log in place, click on gallery as shown by the pink rectangle above
Then click on the category, for example, Easter Cropathon or Monthly Sketch challenge. Do NOT click on upload pic at this stage as it will load to the wrong area.
Then click on the specific category, for example , Saturday Colour Challenge.
Once you are in the correct category, look just above the top left picture as shown and you should see either a blue ?, a red cross or in this case, a black box with upload pic. It appears to depend on whether you are on a laptop, iPad, desktop, etc.
You WILL NOT see this icon if you are NOT logged in
Click on this, then the browse category and you should be able to add your layout from your saved images.