Let's add a new Leased Tag Group that polls a Tag from the PLC at a 1 second rate when someone needs to view that Tag in the Client. If the Client is closed, or the Tags are not displayed in the Tag Browser of the Designer, the Tags will not poll at all.
The Tag Editor will open showing you are editing multiple Tags. From the Tag Group dropdown list, choose Leased, and click OK.
You just created a new Leased Tag Group and added some Tags. These Tags are only polled quickly when a component that is bound to it is showing in a Client, Session, or when the Tags are showing in the Designer. For example, these three Sine Tags that are part of the Leased Tag Group are each bound to an LED component.
Remember that Tag History is stored based on the current Ignition Tag value. If your Leased Tag Group has a 0 slow rate, you will not get updated data to store for history. Always make sure your Tag Group slow speed is at least as fast as your History Tag Group speed.