サイ, もよう.す, もよお.す
sponsor, hold (a meeting), give (a dinner)
JLPT1 G7 S13 F536
As per 崔# (squat): → squat (with the *urge*) to defecate → *meeting/gathering/function* (← gathering at which attendees squat) → *sponsor*; *hold* (← sponsor/hold a meeting). Here, 人 has no semantic function, being used simply to create a derivative character conveying meanings that dropped from the original one.
[Full Kanji Etymology List]