This needs to be set up and configured by a system admin.
Archiving can be manually triggered from the ELN interface. By default, the archiving buttons are not shown, and they need to be enabled by an Instance admin or even a group admin in the case of a multi-group instance. This is done in the ELN Settings, as shown below.
In addition, the Unarchiving helper tool should also be enabled in the ELN Settings:
More information on archiving and unarchiving datasets can be found here: Data archiving