Adding regex (Windows service names for discovery) into a template [problem]

[Duzujap]

Hi im fairly new to everything that zabbix offers and my language is not supported ... so i have some comprehension issues aswell.

Now my problem:
I have a server wich is taged with the standart windows_os template ---> i get errors for some services that do not run all the time or only for a set amount of time and i dont want to see that
for example: TrustedInstaller

after some researching i came to a solution that i had to change the regex (Windows service names for discovery) wich i did as follows :
i cloned the original wsnfd and named it wsnfd 2

^(MMCSS|gupdate|SysmonLog|clr_optimization_v2.0.50727_32|clr_optimization_v4.0.30319_32|OneSyncSvc_.*|BITS|^.*TrustedInstaller.*)$

first of all i dont understand why it has to be

BITS|^.*

and not

BITS.*|

lets say that the "solution" works fine. how do i add the new regex into my windows_os template.

i looked into the discovery tab in the template but theres a system.discovery key that seems to point to the standart regex (Windows service names for discovery) and the start up discovery
--> how do i add the new wsnfd 2 to the windows_os template (overwrite the old one)

best regards Zabbix newbie

[Duzujap]

"push" i still need a answer sadly