Add comment to institute command

demo_tuhh_presentation.tex

@@ -7,7 +7,7 @@
 \date{\today} % or \date{dd}{mm}{yyyy} or \date{Text}
 \author[Corresponding Author]{First Author, Second Author}
 \email{corresponding.author@tuhh.de}
-\institute{Corresponding Authors Institute}
+\institute{Corresponding Author's Institute} % Not necessary for institutes with registered document class 
 \street{Am Schwarzenberg-Campus 1}
 \city{21073 Hamburg}
 \website{www.tuhh.de}