In Global Options > Activities, implemented the Register Extra Days option:

• If Register Extra Days is turned on and Shift with Extensions (Extra Days Activities) is selected, then the Add Shift Extension menu item for one and for multiple shifts is available in the Rotation Planning module. The respective fields are shown under the Shift Details tab of selected shift.

  

• If Register Extra Days is turned on and Single Shift (Extra Days Virtual Activities) is selected, then the Add Shift Extension menu item for one and for multiple shifts isn’t available in the Rotation Planning module. The fields are shown under the Shift Details tab of the selected shift.