In most motorcycles, it is not necessary to hold the clutch in to start the engine. Motorcycles typically have a safety mechanism known as a neutral safety switch that prevents the engine from starting unless the transmission is in neutral. This means that as long as the motorcycle is in neutral, you can start the engine without pulling in the clutch lever.
This can vary depending on the specific make and model of the motorcycle. It's always a good idea to consult the owner's manual of your motorcycle to understand the starting procedure and any specific requirements it may have.
Remember, it's important to be familiar with the specific starting procedure for your motorcycle to ensure proper operation and safety.