Possible enumeration values:
| Name | Value | Description | 
|---|---|---|
| None | 
                     0  | 
                |
| Once | 
                     1  | 
                |
| Always | 
                     2  | 
                |
| Days | 
                     3  | 
                |
| Daily | 
                     4  | 
                |
| Weekly | 
                     5  | 
                |
| Monthly | 
                     6  | 
                |
| Annually | 
                     7  | 
                |
| Hours | 
                     8  |