Explanation
The additions in the customer support executive job role can be explained as follows:

Autonomy of customer support process helps the worker attend the calls needing an immediate solution, consequently motivating the employee by aligning issues using email facility.
An employee who receives training on the work is highly motivated to work efficiently. So, a learning model for communication skills adds benefit to the customer representatives and the company.
A cashier may use similar facilities that can be explained as follows:

The cashier may direct the customer of the bank to the technical team that solves queries needing technical expertise using the email facility provided by the company. Consequently, this decreases client grievances and motivates the cashier to utilize time for the required work.
The cashier who learns the way of conversing with clients can receive good feedback from them, which may help to add value to the work in the form of career and monetary benefits.
Sample Response
A customer executive's role can be structured in the following way to enhance motivation:

Usage of email facility for dealing with customers helps the worker to manage the work on a priority.
Training on communication skills encourages the customer executives to converse with clients.

A cashier's role can consider the similar features for support in work as follows:

The cashier may use email support for solving queries and ranking priority works.
The cashier can attend the company's training on communication skills.