I ran across this little line of code while looking for something else in Reflector.  The Business Rules assembly in SalesLogix 7.5 has a method in the BusinessRuleHelper class called FlushCurrentGroupSetDefault that allows you to essentially set the current group of the entity you are on by passing to it the string of the group name you wish to open, as shown here:

Sage.SalesLogix.BusinessRules.BusinessRuleHelper.FlushCurrentGroupSetDefault("ALLTICKETS");