Connector Obstacle tool (Edit Model)
Creates obstacle geometry in locations where bolts and pins would be used in an assembly.
You can access the Connector Obstacle 
tool in the Edit Model contextual environment. To open it, in the Generative Design workspace, on the Define tab, click Edit Model > Edit Model 
.
Connector Obstacle lets you to create straight edged cylindrical geometry, to prevent geometry from being created where pins and bolts are needed. By default, only the hole geometry is created. Select Bolt Head to include obstacle geometry for bolt heads, and Tool Clearance to include obstacle geometry to allow for tool clearance.
Tips and tricks
To create detailed obstacle geometry, first create the simple shapes using the Connector Obstacle tool, and then modify them to create fillets or other details, using tools such as 
Press Pull.