How can I enable evidence to be uploaded in eChanges?

This controls whether the user can upload evidence as a part of the process prior to submission.

Setting it to true will ensure evidence can be uploaded prior to submission. 

AfterActionEvidenceUpload

This controls whether evidence can be uploaded post submission of the form.

This also adds a button adjacent to each evidence item and therefore enables the form to track what has and has not been uploaded.

Setting it to true will ensure evidence can be uploaded prior to submission.