The Sample rate can be default set to a minimum 100Hz, but if you want to have a lower Sample rate which can go down to 1Hz, you need to follow the next steps.
1. In the Channel setup you must add a column named Sample rate. To do this go on a column or free screen and right-click on the mouse to open edit columns. When the edit columns open, you choose Sample rate and then click OK.
2. Now the column Sample rate is added. Where you can configure the Sample rate from 1Hz to 100Hz for one channel or all of them.