If you have make customization (non module based) to Perfex CRM which include adding extra tables that are not included in the Perfex CRM default tables, you can follow below guide to ensure the tables are also included for the tenants.
A simple way is marking the table in Tenant seed settings i.e SaaS > Tenant seed > ‘Tenants seeding data tables’. If you dont want to share your content inside this table, kindly consider using a dedicated instance option.
Another alternative is to export your master crm table structure (i.e create table statements) into a sql file and place it in perfex_saas/migrations/default_seeds folder. The SaaS should pick it up and include all tables starting with the db prefix (tbl) when deploying new tenants.