I have webform module with multiselect field (Checkbox) User can select all the three.
DP|Digital Print Required
TP|Print has been taken
If user selects the last option then, only that option must be saved after submitting even if the other options are selected. If other two options are selected then as usual those options should be saved.
In General, If the user selects the first two options, it should accept the first two options. If user selects third option, then it should save the third option not other two options(If user selects). Example: If user selects all three options, then it should save only the last option.If user selects the last option i.e., Print has been taken, then it should save that irrespective of other selections.