You can set the Use Automatic Inflation control so that inflation boundaries are selected automatically depending on whether or not they are members of Named Selections groups. The following options are available:
Remember the following information when using inflation:
Automatic inflation is supported only for 3D inflation on volume models. It is not supported for 2D inflation on shell models. You cannot select Program Controlled or All Faces in Chosen Named Selection for the Use Automatic Inflation option to mesh a 2D model. To apply 2D inflation on a shell model, use local inflation mesh controls instead.
In the following scenarios, using inflation results in automatic suppression of the refinement control:
When automatic inflation (either Program Controlled or All Faces in Chosen Named Selection) is used with refinement in the same model
When local inflation is used with refinement in the same body or in the same part
In general, using a mixture of local inflation and automatic inflation within the same part is not recommended. When you mix local and automatic inflation, the local inflation settings will be used for the bodies to which they are applied. The automatic inflation settings will create inflation only on those bodies that do not have local inflation applied to them. The automatic inflation settings will ignore all bodies and all attached faces to which local inflation settings are applied.