The scheme first launched last year, and the latest tranche of mentor pairings were revealed in February.
For the scheme's relaunch, it will work in partnership with the Taylor Bennett Foundation, a charity that aims to encourage more people from ethnic minority backgrounds into the PR industry. Alumni of the charity's long-running training programme will be invited to take part in the scheme, the PRCA said.
In addition, it is being made available to junior-level PR practitioners for the first time. Previously, it was only open to senior staff.
With the scheme now open to a broader range of applicants, PR account executives and senior executives (or equivalent) will be mentored by agency managers or senior managers (or equivalent); managers and senior managers by account directors; and account directors by industry leaders, including the PRCA Fellows.
PRCA director general Francis Ingham said: "We are very proud to relaunch the Fast Track mentoring scheme, with its aim to support every level of the industry, and to support those from a diverse range of backgrounds. Mentoring is a fantastic way of passing on the expertise and knowledge held within the industry to a new generation of hopefuls."
Potential mentors or mentees should email Harry Bristow at the PRCA, with 250 words either on why they would benefit from mentoring, or on why they would be a suitable mentor. The deadline is 4 September.
The scheme is open to PRCA members based in the UK or in the MENA region, where the RCA launched last year.
Each mentoring engagement will last for a period of six months, with the first tranche of mentors beginning in September. Each placement will start with a face-to-face meeting between mentor and mentee and will then be followed by monthly meetings or calls.