This simple scaffold creates a table in to which you can enter notes of various categories (easy to add more categories). In addition, you can assign or attribute a note to any user in the confluence-users group (or change it to any other group of your choice):
{scaffold:NoteTable}
{table-data:Notes} ||Date||Type||Note||Assignee||
| {date-data:NoteDate|format=dd/MMM/yyyy|minYear=2006} | {list-data:NoteType}
{list-option:Installation}Installation{list-option}
{list-option:Credit}Credit{list-option}
{list-option:Other}Other{list-option}
{list-option:eSupport}Support Ticket{list-option}
{list-option:Termination}Termination{list-option}
{list-data} | {text-data:Notes|type=area|width=230px|height=50px} | {list-data:Assignee}{user-options:groups=confluence-users}{list-data} |
{table-data}
{scaffold}