Use RS or SR blocks if you want a latched bit. But be careful if you expect the latch state to be maintained in Plc memory through power cycles etc.
You can also use move blocks with the enable input but this is less elegant than using a latch block
I try and use latches sparingly as it creates more state in the Plc program, wherever possible any tag that is written is continuously written as a product of the inputs.
It is also more elegant for a tag to only be written in one place so I prefer latch blocks to multiple move blocks