To check 'transferable schedule' run this command
::> snapmirror show -destination-path <vserver>:vol_mirror_vault -fields schedule,policy
Note: schedule parameter above is called the 'transferable' one.
To check 'non-transferable schedule' run this command
::> snapmirror policy show -vserver <vserver> -policy custom -fields schedule
Suppose the output shows 'none' that means I have nothing scheduled for 'non-transferable or independent snapshot' on the vault destination.
Suppose, I want to add 'non-transferable' schedule, for example - I decide, I want 'daily' independent snapshots, then I use this command:
::> snapmirror policy add-rule -vserver <vserver> -policy custom -snapmirror-label daily -keep 8 -schedule daily
Please note: "-schedule" parameter in the command above will only enable independent scheduled Snapshot copy creation on the destination with SnapMirror label "daily". Its' not a transfer schedule.