APETT recognizes the importance of elevation of its membership through the grades of Student Member, Associate Member, Member, Senior Member and Fellow. The grade of Fellow cannot be attained by direct admission, but in addition to being at least forty years of age, the following criteria must be achieved, with the appropriate weightage: years of Membership in APETT; distinguished career in engineering, including peer reviews and public recognition; service to APETT, including on Executive Council, Divisions, Committees, etc.; and community and social improvement activities.

APETT seeks to educate and lobby Government public policy makers on appropriate engineering policies and priorities, through meetings, letters and public awareness outreach.

One of the proudest achievements of APETT was the campaign to enact legislation for the registration of engineers. This effort began in 1962 (two years after the founding of APETT) and, after many hard and frustrating years, culminated in the proclamation of the Engineering Profession Act, No. 34 of 1985. This led to the establishment of the Board of Engineering of Trinidad and Tobago, the body charged with registration or licensing of engineers. APETT is recognized by the Government as the agent for any amendment of the Engineering Profession Act. APETT is seeking the introduction of the following regulations to the current Engineering Profession Act:

In order to practice engineering in Trinidad and Tobago, the individual must be registered with the Board of Trinidad and Tobago (BOETT);

In order to retain registration with BOETT, the individual must successfully complete over a specified period an approved programme of Continuing Professional Development (CPD); and,
Each engineering discipline should have its own BOETT assessment committee consisting of leading professionals in each discipline. The criteria for registration should be set by the assessment committee for each discipline.