Custom fields allow tracking additional information about all the asset attributes. The idea of field set is to keep commonly used fields grouped together. So, no need for adding fields one-by-one for the various type of assets. Once the field set is configured, you can choose this when configuring the model. So that these special fields will enable while adding the particular model device. (Refer, How to add device).
Go to the TOP Header > click on config icon.
Go to the CONFIG > Custom Fields > click on Add Field set
Field Order: It refers to the order of the field.
Field Name: Choose New Field to add under this Field set.
Go to The CONFIG > Custom Field >click on Add Custom Fields.
Go to The CONFIG > Custom Fields > Fields.
To delete any element, use the trash icon.