Explanation
Self-service is a process through which the employees may access the database and also receive training with the help of the internet. The employee can access the important information related to the training, feedback, and compensation online.

Some of the HRM functions that can be given with the use of self-service are as follows:

Training: Technological advancement has shifted everything online. So, the use of self-service training can be easily imparted to new joiners without the involvement of HR professionals.
Manpower selection: The selection of the right person for the right job at the right time may be done easily and quickly.
Remuneration: Salary and remuneration details may be maintained online and can be accessed by the employees for referral purposes.
Manpower Planning: Manpower planning refers to the selection of the right candidate for the top management, which may ease through self-service. The details of the eligible candidates are available to ease the planning.
Orientation and induction of new hires: New hires can be introduced to the working and environment of the organization by the use of a self-service facility.
The benefits of using self-service are explained as follows:

HR professionals have access to the instantly available information: Any information such as remuneration can be retrieved, or leave related queries may be addressed immediately.
Employees may retrieve required data as per their convenience: Each employee is provided with the facility of login to access the system to retrieve important information.
HR professionals may pay attention to the neglected areas: HR professional may utilize the saved time for other important aspects such as checking the policies, looking for ways to make the workplace better, and so on.
The drawbacks of self-service are explained as follows:

There is no face-to-face interaction with HR personnel: HR professional may rarely invest the time with people owing to the automated self-service that people may access easily without any help from HR professionals.
Socialization and interpersonal relationship are not entertained: People meet less than before as everything is available through online means.
Verified Answer
The following HR functions can be provided through self-service:

Training
Manpower selection
Remuneration
Manpower Planning
Orientation and induction of new hires

The benefits of using self-service are as follows:

HR professionals have access to the instantly available information.
Employees may retrieve required data as per their convenience.
HR professionals may pay attention to the neglected areas.
The drawbacks of self-service include the following:

There is no face-to-face interaction with HR personnel.
Interpersonal relationships may not be developed.