1. When alternate approvers login to approval central, they will not see the signatures for which the approver is not the primary approver. For alternate approvers, they need to use advanced search to identify the record to approve.
2. Also on the CR form, the pending approvers table will not show the alternate approver in the approvers column.
I think it will be advantageous if the approval notification itself has information about whether it is for primary approval or alternate approval. This way the recipient can just read the email and not have to login to Remedy if the notification was for an alternate approval.