The Model Only tools are only used in ModelBuilder. Some of the tools are used to control the flow of processing while others are simple support utilities. Learn more about using Model Only tools in models.
Quick Tip 20 – In-Line Substitution in Modelbuilder
Essential vocabulary: Executing tools in ModelBuilder—ArcMap
Use ModelBuilder—ArcGIS AllSource
Use ModelBuilder—ArcGIS AllSource
Tutorial: Creating tools with ModelBuilder—ArcMap
Model Only Tools Collect Values
Tutorial: Executing tools in ModelBuilder—ArcMap
Model Builder for Select and Buffer in ArcGIS, Angad Lamichhane
Tutorial: Executing tools in ModelBuilder—ArcMap
Use ModelBuilder—ArcGIS Pro
Model Builder in ArcPro
Tutorial: Creating tools with ModelBuilder—ArcMap
Solved: Model only works in ModelBuilder window - Esri Community
Example: Using ModelBuilder in ArcGIS Pro
ArcGIS Model Tool2: Using Model Only Tools in ArcGIS Model Builder