To edit or delete an existing subscriber click on the Handle link to the right. The row then changes so that you can edit the values. 
In this mode you can change the id, description and which measurement point it belongs to. To edit several at once, check the checkboxes on the right. Caution changes made to a field will be set on all checked subscribers. Unchanged fields will not propagate the changes to the others.
To save your changes click on the Update link and to remove click on the Delete link.
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