Add differentiation of work/leave other events in the overview of planner

Adda way to show on the planner who is on other events (leave) and who is on other events (working). Not just in the aberrated list, but also in the overview, to let people know who is working and who isn't, without disclosing the reason.

Describe the Challenge

let people know who is working and who isn't, without disclosing the reason.