Note: Theoretically it would be possible to use one FTS-Index in more WebOffice 10.5 SP2 applications but SynerGIS DOES NOT RECOMMEND this scenario! ONE FTS-Index should be used by ONE WebOffice 10.5 SP2 application.
Installing more cores of a FTS-Index application:
1. Duplicate the folder WebOffice in C:\Tomcat\webapps_custom\FTS-Index\solr\WebOffice
Duplicate the existing folder WebOffice (copy/paste) in C:\Tomcat\webapps_custom\FTS-Index\solr\WebOffice.

Duplicate WebOffice folder
Note: Avoid special characters when naming the new folder.
Note: The existing WebOffice folder can be arbitrary multiplied in order to install more cores of the FTS-Index application.
2. Adjust the name of the core of the FTS-Index application in C:\Tomcat\webapps_custom\FTS-Index\solr\WebOffice_neu\core.properties
Rename the folder from the step 1 and use this name to adjust the file core.properties in C:\Tomcat\webapps_custom\FTS-Index\solr\WebOffice_neu.

Adjust the name of the core of the FTS-Index application
Note: Please consider a write protection on the file in order to edit it.
Note: SynerGIS recommends to use the same name as used for the folder in step 1.
Restart Tomcat and call the FTS-Index application with http://<Host>:[port]/FTS-Index.
You will find the new FTS-Index in the Core Selector.

FTS-Index application
Select the new index. The resulting URL can be used for the configuration of your WebOffice 10.5 SP2 application.

FTS-Index application
3. Clear the data directory
To avoid already existing subindices in the copied core of the FTS-Index application you can delete the data directory. Stop Tomcat, delete the directory data (C:\Tomcat\webapps_custom\FTS-Index\solr\WebOffice_neu) and restart Tomcat afterwards.

Delete data directory
Note: After a restart the data directory will be re-created.
Note: When encountering problems related to the full-text search, follow the troubleshooting described in chapter Problems Related to Full-Text Search.