I created a table in SQL using PostgreSQL called "tenants". Below is the code for the tenants:

```
create table tentants (
id bigserial not null primary key,
tenant_name varchar(1000) not null,
offices int not null,
number int not null,
email varchar(1000)

```

I want to include the ability to add multiple values to "office" in case a tenant rents more than one office. I don't want to use JSON for this. I tried creating a related table called "offices" but That could only allow me to add one office per tenant.
What is the best approach for this?