Most of the JChem for Excel functions require a structure as an input.
To use a custom chemical function, follow the steps below.
Select a cell and click the Insert Function button ( Shift+F3 ).
Select the desired function category from the list.
Select a function.
Click OK
On the Function Arguments form, specify the data for arguments.
Click Ok to display the results.
Alternatively, these functions can be used from cells. In this case, select a cell, enter the name of a function and the necessary parameters.