The assignment of database tables to tablespaces is specifically indicated in the Database_settings.properties client configuration file. General syntax:
<Database type>_TBLCONF_<Tablespace name> = Value
If you are working with an SQL Server database type for a multi-byte client, you need to use one of the additional Unicode variants SQLSERVER_2008_UNICODE, SQLSERVER_2012_UNICODE, or SQL_Server_2014_UNICODE.
The syntax of the tablespace specified by "value" is database-specific, too, and is described in the corresponding subchapters of the chapter on Supported database systems.