Multi-User Citrix environment does not allow multiple users to use FileZilla

[Jags007]

Hi, we have installed FileZilla in our citrix environment and need a minimum of 100 users to have access to SFTP files from a secured network to another location on t he same SAM (unsecure) we are using ZFTP as the server. At the moment only one user can use the FileZilla client as when another one tries to use the FileZilla client and error advises that the application is in use. Is there a setting or a way multiple users can concurrentky use this client ?