Have you tried searching the WR site? Here are the regs. Quite clear.
How do I know which team is a Union’s next senior fifteen-a-side
National Representative Team?
(a) There should be no uncertainty over which team constitutes a
Union’s next senior National Representative Team. Unions are
required to notify World Rugby of the name of their nominated next
senior National Representative Team. The team nominated remains
the Union’s next senior National Representative Team unless the
Union notifies World Rugby of a change in this nomination. A Union
is entitled to notify World Rugby no more than once per calendar
year of a change to its next senior National Representative Team
provided that in doing so it shall take account of any Matches such
team may be scheduled to play and shall advise the Union of any
senior or next senior National Representative Team it is scheduled
to play reasonably in advance of such Match. The identity of a
Union’s next senior National Representative Team can be verified
with the Union concerned and/or World Rugby.
(b) Unions must ensure that all persons involved in an International
Match (Players and team management including coaching staff) are
made aware of the status of their team as the next senior National
Representative Team and that of their opposing team where it is the
senior or next senior National Representative Team of another
Union and what that means from a capturing perspective under
Regulation 8. Notwithstanding the Union’s obligation to inform the
Player and team management it shall be the sole responsibility of
each Player to ensure that he is aware of the status of every Match
in which he plays and the implications of playing in an International
Last update: 1 July, 2016 160
REGULATION 8 EXPLANATORY GUIDELINES
Match involving the senior or next senior National Representative
Teams of two Unions.
(c) In addition to (a) and (b) above, Unions who designate their Under
20s National Representative Team as their next senior National
Representative Team have a particular onus to clearly make the
Team Players aware of the consequences of being captured for that
Union at age grade level. Effective 1 July 2014, the Players on any
such Team which participates in the World Rugby Junior World
Championships, World Rugby Junior World Trophy or the Six
Nations U20 Championship (where they are present at the Match
played by that Team either as a replacement, substitute or playing
member of that Team and has, at the time of the Match, reached the
age of majority) will be captured. In this regard the status of the
opposition teams in any Match in these named tournaments is not a
factor to be considered.








