For external channels it is possible to send restrictions for a rate option or offer code.
To be able to use the function you need to add a 'Booking rule set' for the rate you want to control separately.
1. Go to 'Administration>Drop Down Lists' and select 'Booking rule set'.
2. Click 'New Booking rule set' and give your rule a Name and 'Save'.
3. In 'Units & Rates>Channel Management' configuration. For the rate you want to control independetly select your Booking rule set.
4. In 'Units & Rates>Bar Management' click 'Advanced' for advanced options if you have selected 'External' channels you will see a dropdown where your Booking rule set is listed. If you select this rule you can add close outs, minimum lenght of stay etc. for this specific rate only. If you add a restriction for Default rate this rule will not be applied to the Booking rule set.