Often you will want to include a solvent in your QM/MM model. This is easy to do: from the Solvent pull-down menu, select the type of solvent to use. Next, specify if the solvent should be put in a sphere or in a box around your protein. Finally, you need to set the size of the box (or sphere). If the size starts with a '+' sign (as is the default), that distance will be added to the size of the protein, otherwise it will be an absolute size.
Select to use 'Water' as solvent
