I have a cloned page with 10 folders.

Code: Select all
<cms:template clonable='1' />

<cms:folder name='categorie1' title='Categorie 1' weight='1' />
<cms:folder name='categorie2' title='Categorie 1' weight='2' />
[..]
<cms:folder name='categorie10' title='Categorie 10' weight='10' />

How can I make the Categories multi selectable in the Backend (i.e. Checkbox Button)?

Greetings
Bertram