Max has the "Administer Projects" permission.

A custom field is a field that is not part of the default set of Jira system fields. Creating a new custom field requires Jira administration permissions, so Max cannot perform action 1. However, adding an existing custom field to a transition screen does not require Jira administration permissions, as long as the screen is not shared with other projects or issue types. Therefore, Max can perform action 2 if he has the “Administer Projects” permission and the screen meets the prerequisites for editing. References: : https://support.atlassian.com/jira-software-cloud/docs/what-are-custom-fields/ https://support.atlassian.com/jira-software-cloud/docs/configure-screens/