Internal flags questions

Hi, I have two questions about internal flag function.

-How should I do to turn on/off all flags except a specific number?

-Can two or more flags be turned on/off at a time?

1:
You will have to turn on / off all the flags, and then turn on / off the flag that should not be turned on / off, an extra time.
Example that will keep a random flag on, while the others are turned off:

* User click on Object1:
- Object1: Set Flag 0 Off
- Object1: Set Flag 1 Off
- Object1: Set Flag 2 Off
- Object1: Set Flag 3 Off
- Object1: Set Flag (Random(4)) Off


2:
Yes, simply have two actions in the event.
* User click on Object1:
- Object1: Set Flag 0 On
- Object1: Set Flag 1 On