This button allows to open the advanced configuration box.
The first tab allows to configure movements duration.

Durations can automatically computed depending on time mode :
Time per step : each group as the same duration
Total time : a total duration is given, each group
Constant speed : each group duration is computed according to its average movement distance, to have an overall speed constant for the scenario
User defined : each group duration is separatly editable
The second tab allows to manage movements

Movements can be managed using the following functions :
Translation up : move the selected contiguous translations one line up
Translation down : move the selected contiguous translations one line down
Whole group up : move the group of the selected translations one group up
Whole group down : move the group of the selected translations one group down
Up to previous group : move the selected contiguous translations up to the previous group.
Down to next group : move the selected contiguous translations next to the next group.
Group selection : creates a group with the selected contiguous translations using the "Ctrl" key.Treanslations of a same group are made together. To ungroup a translation, select the translation and click on "Group selection".This way you realize a group of only one translation.