CONNECT_BY_ISLEAF functionality available in PSQUERY?

We are currently on HCM 9.1/ PT 8.50

We are in the process of upgrading to HCM 9.2/PT 8.53

I have started using the CONNECT_BY_ISLEAF in sqlplus but would like to be able to do similar in PSQUERY.

Here is my SQL that I use in SQLPLUS:

SELECT last_name||Emplid "Employee", CONNECT_BY_ISLEAF "IsLeaf",

       LEVEL, SYS_CONNECT_BY_PATH(last_name||emplid, '/') "Path"

  FROM ps_employees

  WHERE LEVEL <= 4

  START WITH emplid = '012345'

  CONNECT BY PRIOR emplid = supervisor_id AND LEVEL <= 5

  ORDER BY "Employee", "IsLeaf"

/

An HR user is now asking for SQL Developer access because he is unable to do things like this in PSQUERY.