How do I make a field required???

[Rick Goodman]

I wish to set a field to either Required/Optional. 

The Atlassian documentation is simple and clear. I followed the instructions and... the instruction appear to be wrong.  Please see the attached image with (1) my Jira page at left and (2) Atlassian doc. at right.

NOTES:
-We are using the latest Web-based version of Jira

-Jira is at left.  I am looking at "View Field Configuration" | "Default Field Configuration"

-Jira documentation clearly indicates that I should see "Required" or "Optional" settings at left.  Neither of which are displayed.

What am I missing?

[Joe Pitt]

As @Mikael Sandberg said you can't make it optional. 

Resolution Field

Resolution Field can't be made optional. DO NOT put the field on any screen except the one presented in the transition where it is to be set. Resolution is a special field in JIRA. It has an initial value of ‘Unresolved’, which means the field is NULL in the database. It is ALWAYS required when it appears on the screen. ONLY display it on the screen during a transition to the status where you want it set. Once it is set the issue ID will appear with as strikethrough. If you re-open an issue the transition from closed to reopen needs to have a post function to CLEAR the resolution field to set it back to Unresolved.

[Mikael Sandberg]

Hi Rick,

Welcome to the Atlassian Community.

Resolution is a special field that cannot be set to optional. By default it will always have the value of Unresolved until you either add it to a screen to allow the user to change it or you change it via a post function in your workflow.