[Docs] Task Editor customisation

[khattakdev]

we are currently working on a scheduler for project management and time management.
We want to be able to take a look at the current projects of electricians and for example switch projects if it’s needed or assign additional workers to one project.
We are currently working on the TaskEditor. We want to store a custom field “anchor” in the Events (this is the address ID of a building for example “Main Street 10" = MS0001).
I am a bit stuck on this. I added the anchor-field to the TaskEditor, but the information is not stored in the event. Do you have a good guide on how to use EventStore (I think I need it?) to store additional “custom” data in a event?