We are currently using the enterprise version on Saas,

In order to develop some extensions and use it internally. We are currently studying for the migration from Saas to on premise.

In the meantime, we would therefore like to set up a development and test environment to both test the features and carry out developments with data similar to production.

Is the license already purchased sufficient to install an enterprise locale for testing?

If so, how do we proceed?

If not, should we buy more licenses?