No, since maintaining proper profiles for more than one shell incurs substantial administrative overhead, which we cannot afford. If you would like to use a different shell for interactive work, please refer to this page.
Yes, but we would advise to request a dedicated account for this purpose. After installing the software in the home directory of this account you can use the member program to give other accounts the possibility to access and use this software.
For this purpose you can request a further account. However, this account will not have a login possibility. You can use the member program to add other users to the associated group similar to the described usage of project accounts.