These aspects of this agreement are summarised in the Managing the People pages of this producers toolkit.
The BBC deals with Equity through the Contributor and Talent Rights area of Finance, Property and Business Affairs. The full text of the agreement is held by that department, and by the Business Affairs teams in the genre programme groups and in the Nations/Regions.
You can get advice on interpretation of the agreement from the Business Affairs team in your genre programme group or Nation/Region.