Why can I not schedule less than 6 hours in a single day?

Basic Installation service is estimated to take up to 6 hours (with travel time), so to ensure you are able to complete the installation in one visit, ReadiCharge asks that you be available for at least 6 hours in a day. 

Remember that some service tiers, or multiple charger installations, may take unto 12 hours so your availability needs to accommodate the services you selected to offer. (Go to your App Settings to edit your service offerings.)