While creating an offer you can use the Advanced Settings to define a Minimum Order Size required to redeem the same.
Enter the amount, that serves as a minimum order value required to redeem the offer.
Check out the screenshot below to see how you can add the same.
![image](https://lh5.googleusercontent.com/msqj2nBn6o_AnukwJSxpm3qAjssXMfMm7kT_RUrUK7-asYte_CC00EXtuI_VFb7DFB4N4HwVSPHr0_9B8fdEb3mSdUOIt-J-OKLd_xKdX9w7jImcf77hWfJOyKmV4OB6BV0Wtfbo)