I've confused that i can create and edit every widget but selector & discovery widget. i can see the selector & discovery widget but i can't edit them. It's important to use selector widget as Filter in cockpit, even I can use parameter (Analytical Driver) in cockpit. In the demo, i can create and edit selector & discovery widget but when i can't do it when creating my own cockpit in my host. You can see 'settings : enable false ' template of this when i tried to create selector widget:

Therefore, i can't open selector widget configuration by clicking on edit button.
Is it happened because i've used Knowage CE which isn't allow 'associations discovery', not Knowage Enterprise. (see it: https://www.knowage-suite.com/site/licensing/knowage-editions/)
Hope u can reply me soon!