This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
撡 is a rare character. It combines 扌 (hand) with 叅, but the historical development and original meaning are uncertain.
The hand radical 扌 beside the complex shape 叅 suggests an action, but without a clear meaning, picture a hand performing an obscure, ancient gesture.
For ソウ, imagine a hand (扌) sewing (ソウ) an intricate pattern on the right-side component 叅: sew -> ソウ.