In order to view certificate chain details, open the desired KeyStore (Menu File > Open > Open KeyStore) and click on the entry alias Certificate Chain.

In the bottom part of the window, you can see the list with all the certificates. More details for all the certificates from the list can be obtained by selecting one certificate and clicking on Open as well as selecting the certificate directly from the Tree view. It is also possible to select a certificate from the chain and copy it into the clipboard in order to paste it into another KeyStore or even in the current one.