Exclusive switch -- only one switch of a group on at a time

[123 (Taras)]

This might meet your needs. It’s a 5-zone irrigation controller but can be modified to support more zones.

Complex Automations - State Machine

Entities Here’s a summary of all the entities required for this 5-zone controller: One timer to countdown a zone’s duration. One counter to keep track of which zone to process. One input_select to control overall operation (on/off/pause). One group containing all the zone switches. Five input_booleans, one per zone to indicate its enabled/disabled status. Five input_datetimes, one per zone to indicate its duration (in hours and minutes). Five more input_booleans, one per zone representing eac…