Creates a new group for the given side.
Note: In V3.x+, this is not needed anymore. Centers for all sides are automatically created upon mission start.
If no unit of that side exists yet in the mission, then an HQ (center) for that side must be created using createCenter. The theoretical limit for the number of groups is 1296 per side. To avoid exceeding this limit, empty groups can be deleted using deleteGroup.
|Return Value:||Group - Created group. Is grpNull, if the maximum number of groups has been exceeded, or no center exists for that side. Groups that do not have any members (yet), return sideUnknown as their side.|
|See also:||deleteGroup, createCenter, allGroups, join|