If you’ve ever run into the Sharepoint error “No volatile functions allowed e.g. TODAY” then you would have been in the same boat as myself.
There’s an intruiging work around for this issue which involves a phantom column and a calculated value column.
Top left view of your list select “List” from the Browse/Items/List menu. Then select Settings:
At the bottom of that page you can then create new column:
Now, select datetime and the default value of “Today”s date. This will be our phantom volatile column, therefore name the column title “Today”.
Click “OK” to add this column (dont worry, it wont be there for long).
Repeat the create column step however this time select “Calculated Value” for column type and your preferred name. The following is the code we will insert to calculate Monday-Fridays since List Item creation:
Select “Number” data type and 0 decimal places, then click “OK”.
Finally, we can go back to List Settings and click the column “Today” that we created, at the bottom right of the column’s settings there should be a delete option, click that. What this is doing is making sharepoint reference the pointer “Today” to a non-existant today’s date column which then triggers it to calculate the volatile variable “TODAY” anyway!