The "group selection" tool works graphically: simply select the entities of the graphic models on which to start the clash detection session so that the program automatically creates a folder in the inspector with all the entities selected for analysis.
The "filter" tool acts by selecting entities that have characteristics that correspond to those indicated in the selection filter. With this tool, easily specify the files to be subject to a clash detection analysis and filter the entities indicating the properties which, therefore, represent the selection criteria.
The "selection group" allows you to select the entities permanently: they will not change as the model changes, always remaining the same over time.
The "filter" tool allows you to automatically analyse all those entities that correspond to the selection criteria expressed in the filter. The new elements added in the models will be automatically taken into account for the clash detection analysis if they correspond to the properties expressed in the filter.
Once the entities on which to perform the clash detection have been identified, the type of comparison will also be set, specifying whether you want to search for true collisions or also identify minimum distances or tolerances between elements. Collisions can also be searched for within the same IFC model or limited to collisions between separate models.