Settings available in JMango360 Back Office > Settings > Lightspeed Integration Settings > Minimum Order Amount.

If you want to require that customers purchase at least a minimum amount (for example, 30 EUR) before they can check out, please enable this setting and enter the minimum order amount in the field.

In doing so, you to specify a minimum amount, after discounts are applied, that order subtotals are required to meet. Only after the minimum order amount is reached does the Checkout button become available.