@SaraVillagrasa,
You have to use multi-tenancy. Please see the document below:
SAS® Viya® 3.3 for Linux: Deployment Guide -> SAS Viya and Multi-tenancy
Please note that If you anticipate having multiple tenants, even if you have only one tenant initially, you must enable multi-tenancy. Changing from a single-tenant deployment to a multi-tenant deployment requires that you re-deploy your software
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