1. The supervisor of liquor control shall have the authority to suspend or revoke for cause all such licenses; and to make the following regulations, without limiting the generality of provisions empowering the supervisor of liquor control as in this chapter set forth as to the following matters, acts and things:

(1) Fix and determine the nature, form and capacity of all packages used for containing intoxicating liquor of any kind, to be kept or sold under this law;

(2) Prescribe an official seal and label and determine the manner in which such seal or label shall be attached to every package of intoxicating liquor so sold under this law; this includes prescribing different official seals or different labels for the different classes, varieties or brands of intoxicating liquor;

(3) Prescribe all forms, applications and licenses and such other forms as are necessary to carry out the provisions of this chapter, except that when a licensee substantially complies with all requirements for the renewal of a license by the date on which the application for renewal is due, such licensee shall be permitted at least an additional ten days from the date notice is sent that the application is deficient, in which to complete the application;

(4) Prescribe the terms and conditions of the licenses issued and granted under this law;

(5) Prescribe the nature of the proof to be furnished and conditions to be observed in the issuance of duplicate licenses, in lieu of those lost or destroyed;

(6) Establish rules and regulations for the conduct of the business carried on by each specific licensee under the license, and such rules and regulations if not obeyed by every licensee shall be grounds for the revocation or suspension of the license;

(7) The right to examine books, records and papers of each licensee and to hear and determine complaints against any licensee;

(8) To issue subpoenas and all necessary processes and require the production of papers, to administer oaths and to take testimony;

(9) Prescribe all forms of labels to be affixed to all packages containing intoxicating liquor of any kind; and

(10) To make such other rules and regulations as are necessary and feasible for carrying out the provisions of this chapter, as are not inconsistent with this law.

2. Notwithstanding subsection 1 of this section, the supervisor of liquor control shall not prohibit persons from participating in the sale of intoxicating liquor within the scope of their employment solely on the basis of being found guilty of any felony offense, except for prohibitions set forth in sections 311.191 and 311.193.