Hi,
Have you identified everything you have responsibility for in the group ?
Your job description & contract may help detail employment requirements and then any additional expectations.
If you bullet point responsibilities this might highlight any documents you can collect for evidencing.
Not sure it helps but we have a very basic overview of approaching OPs here
Silkysteps Operational plans and another couple of search areas that might help build on are
coordinators,
portfolios, possibly look at it as a comprehensive, if slightly unconventional CV
413 looks interesting, very best wishes with getting back into it all
xx