Script scheduled to run every minute.

:local time [/system clock get time];
:if ($time >= "19:00:00" || $time <= "06:30:00") do={
	:foreach i in=[/caps-man interface find where disabled=no] do={:log info "Disabling CAPsMAN interface $i due to out-of-hours time"; /caps-man interface disable $i}
} else={
	:foreach i in=[/caps-man interface find where disabled=yes] do={:log info "Enabling CAPsMAN interface $i due to workday-hours"; /caps-man interface enable $i}
}