This tab is only shown for CI Type Software (and its children). Tab shows a list of computers (Assets) where the software is installed.
This tab has been added due to new functionality in NNS sync. When you do a sync import now same application CI (Software) is used for all computers (Assets) it is installed at. Before one software CI was created for each asset and each software then could be installed on only one asset. The new logic will save a lot of space in CMDB.
It is possible to add a new assets and you can remove the links. Button Link Asset is a dropdown where you can select New (create a new CI and link it to software directly) or Existing (select existing CI to link).
Search, sort, filter, paging, refresh, column width and export features are available similar to other lists in NSP, see General User Interface.