The document discusses pro-rata allotment of shares, calls in arrears, and calls in advance. For pro-rata allotment, shares are allotted to applicants in proportion to the number applied for when a public issue is oversubscribed. Calls in arrears refers to amounts not paid by shareholders when called. There are two methods to account for calls in arrears, with or without an arrears account. Calls in advance occur when shareholders pay more than required at allotment, with the excess treated as a debt until needed for subsequent calls. Sample journal entries are provided for related share allotment scenarios.