How can i delete orders and customers so that i can make the changes on multistore?

[stefgrifon]

Hello,

I have enabled the multistores, afterwards i made a few orders and users to do the test.

Now i need to change the sharings in multistore and ofcourse the prestashop doesnt allowe me to do that because i have made the tests.

How can i delete these so that i can make the changes on multistore?

Thank you in advance 

Stefanos