When you want to sign off a learners contract:

A message will be sent to inform them that the contract has been signed off, with copy to you.

Here a mechanism needs to be provided, as described above.

A property should be set so that the facilitator can see whose contracts have been signed off.

Ideally the facilitator should be able to add some text to the message, saying “great work” or whatever. I'm not sure what scope there is for this in LD / coppercore.