Final answer:
A member must withdraw a motion before debate or any decision has occurred on it without requiring assembly's permission. Specific rules are determined by the body's own guidelines, but actions like early elections, impeachment, and expelling a member require a supermajority or consent according to laws or rules.
Step-by-step explanation:
If a member of an assembly wishes to withdraw a motion, it must be done before any other member has spoken to the motion, or before any debate or decision has occurred on it. This can be done without requiring permission of the assembly. If debate has already begun, then the member must seek consent from the assembly, which usually takes the form of a majority vote, to withdraw the motion.
Rules around these procedures are often determined by the specific body's guidelines or standing orders. For instance, in both the United States Congress and the United Kingdom Parliament, each House has the authority to set its own rules regarding motions and proceedings. However, actions such as early elections, impeachment proceedings, adjournments for more than three days, moving to a different location, or expelling a member, require consent or a supermajority as stipulated by the governing rules or law.