You can combine parameters of the type(s) that display in that part of a schedule. The values for the combined parameters will display in the same cell separated by a slash or other separator.
For example, in the Header and Footer sections, you can combine Project Information and Electrical Equipment parameters. In the Circuit Table, you can combine Electrical Circuit parameters. In the Loads Summary, you can combine Electrical Equipment parameters.
 Settings Panel
Settings Panel Panel Schedule Templates
Panel Schedule Templates 
 Edit a Template.
 Edit a Template.  Combine Parameters.
 Combine Parameters.  Add Parameter to move it into the Combined parameter pane.
 Add Parameter to move it into the Combined parameter pane.  Remove Parameter to move it into the Panel schedule parameters pane.
 Remove Parameter to move it into the Panel schedule parameters pane. The sample value is displayed in the Preview so that you can edit as needed before closing the dialog.
You can specify a new separator symbol in the Separator cells.
A placeholder set of values for the parameters you combined displays in the cell.