Hi
S_BTCH_ADM BTCADMIN='Y' gives you job admin privileges. From one side you receive requested ability to see cross client jobs but you can delete all too. Standard authorizations for SM37 can't give you requested functionality.
Setting it to 'N' give you the same like removing the objects or setting it to any value unspecified in documentation. You don't have 'Y' = you aren't job admin
The only way I see is skilled ABAP programmer.
Regards
Przemek