This section starts with a pictograph of a looped cord. Perhaps someone is about to make a knot in the cord.
The knot then becomes the basis for a whole series of signs relating to the ways in which human beings come together.
For image credits, please see below.
Indus Script Signs with Numbers: Sign List of the Indus Script and List of Sign Variants: Iravatham Mahadevan, 1977: The Indus Script: Texts, Concordance and Tables: The Director General
Archaeological Survey of India.
Indus Script Sign without a Number: Lynn Fawcett, 2019.