In Excel Templates, there is a template sales invoice.

That template has protection that some cells are selectable but some cannot
even be selected. If we click on that cell, it does nothing even with the
double click!

what is this protection?

I tried to protect my document but either it makes all the cells
un-selectable or all the cells are selectable but yes, the data of these
cellls is proteced.

How can i protect my document same as i mentioned above that the protected
cells should not even be selectable.

Thanks and Regards..