The manner in which their meetings were conducted:
Met Often
22 And behold, ye shall meet together oft; and ye shall not forbid any man from coming unto you when ye shall meet together, but suffer them that they may come unto you and forbid them not; (3 Nephi 18:22)
12 And they did not walk any more after the performances and ordinances of the law of Moses; but they did walk after the commandments which they had received from their Lord and their God, continuing in fasting and prayer, and in meeting together oft both to pray and to hear the word of the Lord. (4 Nephi 1:12)
5 And the church did meet together oft, to fast and to pray, and to speak one with another concerning the welfare of their souls. (Moroni 6:5)
Broke Bread and Drank Wine
5 And the church did meet together oft, to fast and to pray, and to speak one with another concerning the welfare of their souls.
6 And they did meet together oft to partake of bread and wine, in remembrance of the Lord Jesus. (Moroni 6:5-6)
Were Conducted by the Holy Spirit
9 And their meetings were conducted by the church after the manner of the workings of the Spirit, and by the power of the Holy Ghost; for as the power of the Holy Ghost led them whether to preach, or to exhort, or to pray, or to supplicate, or to sing, even so it was done. (Moroni 6:9)