This is a pictograph of two adults: one following the other. The symbol is the equivalent of the Chinese character cóng 从. It is the verb to follow.
Illustrative Text Reference:
Mohenjo-daro: Seal: M-798 a: Sayid Ghulam Mustafa Shah and Asko Parpola, 1991: Corpus of Indus Seals and Inscriptions: Volume 2: Page 68: Collections in Pakistan: Suomalainen Tiedeakatemia.
Image Credit:
To Follow: Lynn Fawcett, 2017.