Hello Abc, addons are automatically activated except Weasis. To activate Weasis in dcm4chee-web3 you have to do the following:

  1. Go to JMX Console (http://<dcmlinux-ip>:8080/jmx-console</dcmlinux-ip>
  2. Login with JBoss admin user and password (default admin:admin).
  3. Go to dcm4chee.web section, select service=WebConfig
  4. Change WebviewerNames to weasis
  5. Change WebviewerBaseUrl to NONE

Further instructions can be found in https://dcm4che.atlassian.net/wiki/display/WEA/Installing+Weasis+in+DCM4CHEE