I think I get what you are saying, and if not, forgive me:
just add your meta fields / metabox inside:
if( current_user_can( 'administrator' ) ){ // put code here }
*this is assuming you aren’t asking how to add a metafield or metabox.
I think I get what you are saying, and if not, forgive me:
just add your meta fields / metabox inside:
if( current_user_can( 'administrator' ) ){ // put code here }
*this is assuming you aren’t asking how to add a metafield or metabox.