Check the selected ASCE 7 edition for the current project file:
If the selected ASCE 7 edition is ASCE 7-22 or later, just watch this: https://media.enercalc.com/Adding-ASCE-7-22-Loads-and-Forces.mp4
If the selected ASCE 7 edition is ASCE 7-16 or earlier:
1.first change the ASCE 7 edition to 7-22 or later using this as a guide if needed: How do I specify the ASCE 7 edition for the current Project File?
2.Then https://media.enercalc.com/Adding-ASCE-7-22-Loads-and-Forces.mp4
.