The circle may decide to create a "Strategy role" and delegate the Lead Link strategy authority to this "Strategy role" by adopting a policy on purpose.
Hope that helps :-))
2.2.3 AMENDING THE LEAD LINK ROLE
A Circle may not add Accountabilities or other functions to its own Lead
Link Role, or modify the Role’s Purpose, or remove the Role entirely.
However, a Circle may remove any Accountabilities, Domains, authorities,
or functions of its Lead Link Role, either by placing them on another Role
within the Circle, or by defining an alternate means of enacting them.
When this occurs, it automatically removes the relevant element or
authority from the Lead Link Role, for as long as the delegation remains in