Is it possible to connect two breakers in one panel board

Is it possible to connect two breakers in one panel board two breakers in one slot A tandem breaker is like having two single pole breakers in one slot It's a space-saving option Similar to single pole breakers, often rated two breakers in one slot In this video I talk about Tandem Breakers and why you would want to use them Please

two breakers in one slot So if the manufacturer has designed a panel to take only full height breakers, then you can't use the pancake breakers or the twins

two slot Is there a special one for connecting two 1 GE breakers together Is that 4 slot branch breaker style compatible with all Homeline panels? As for the one receptacle that is on two single-pole breakers, it is okay as long as the breakers are installed adjacently by their length (in