Roles can be edited via  Edit Role   , for the current folder also via  File    Share    Edit Role   , or during the creation process for a role from the "Add Role" form.

This brings up a form in which you have to specify which BSCW actions should be permitted for this role. The actions in this form are structured into six sections according to the six action classes "Get", "Get extended", Change", "Change extended", "Share", and "Share extended". A subset of the actions will already be enabled according to the current setting of the access rights for this role.