This feature is never available in Elements on any version.
You can use a workaround, save the layer mask as a selection
then resuse this selection on different -2 layer mask
Select the mask to copy = click on the mask icon, not the layer icon, then the mask is shown in the editing space. Copy it (Ctrl C)
Select the other layer (add an empty mask if that is not already the case).
Select its mask (same as above) - when the mask is shown in the editing space, copy : Ctrl V.
Adding to MichelBParis reply-
in step 1 and 3 to show mask is the edititng space you have to press Alt+click on the mask thumbnail.
1. Create your new layer above the layer with your mask.
2. Add a new layer mask to that new layer.
3. Click on the layer below and highlight the thumbnail for your mask.
4. Hold down alt and click the mask thumbnail to reveal it.
5. Press Ctrl+A (to select all) then Ctrl+C to copy.
6. Click the layer above and highlight the new mask thumbnail and press Ctrl+V to copy your mask.
Thanks for all your replies. I will be working my way through the instructiuons before this evening. I don't use elements myself as I have Photoshop but most of the members at the club use elements so we are all very grateful for your help.
Here's another way in pse 11:
1. Ctrl (Cmd) click on the layer mask to load the selection of the layer mask
2. Make the layer active that you want to copy the layer mask to.
3. Go to Select>Save Selection and choose layer mask from the dropdown menu.
The above will make a new layer mask on the active layer using the selection you loaded from the layer mask.