Click on the upper right corner of the navigation bar settings (prerequisite must be the identity of the administrator at both ends)
Confluence：Go to Confluence administration，Find Application Links under the "ADMINISTRATION" group, Figure 1-1.
jira：Go to Administration and find "Application Links" in the "INTEGRATIONS" group under "Administration", Figure 1-2.
（Figure 1-1）
（Figure 1-2）