Since version 7.12, Jira allows owner to share edit rights for filters and dashboard. (Release notes)
But it did not work for us after we upgraded Jira from 7.6.6 to 7.12.3. It turns out that the dark feature (com.atlassian.jira.sharedEntityEditRights.enabled) has to be enabled explicitly.
- Go to https://<your-jira-dns>://secure/SiteDarkFeatures!default.jspa
- Add com.atlassian.jira.sharedEntityEditRights.enabled into the dark feature list.