Sometimes it you can have a user with a question like " i'm on webmail where is the button to do this features? I remember to have that functionality somewhere... "
Sincerely after a lot of years and now with an on premise and cloud version with different features i need an help to remember where you can do a things and were you can not but this morning I've found this nice IBM technote with a matrix with all features compared between Notes 8.5.3/9.0.1 iNotes and Smartcloud Notes and Smartcloud Web.
This matrix could be helpful when you have some doubt about features available.
Note: In this matrix is missing at all the ability to process .ics files... (thanks Sir @PaulSWithers ) so you have to remember where you can manage .ics and where you cannot ! ;-)