Create exception on WAF profile

Hello and sorry for my english,

I try to configure WAF profile on my fortigate 7.6.5. it is not difficult to configure but for create exceptions i don't understand what is the best way...

For example, the WAF block this URL : http://moodle.toto.fr/course/modedit.php
I have the event ID signature : 40000137

First, it is possible to do exception in GUI ? don't find....

i undertsand i can do signature exception in CLI but i see there is also :
address-list : Address block and allow lists
url-access : URL access list

so what is the best way ?

thanks a lot