To execute a put selling strategy, you need to mint a put option and then sell that option using the trade page. After which, you will only have the short token.
Ideal when you suspect no change or a slight decrease in the underlying's price
When you sell the option, you collect a premium for it. In the case where the price of the asset is below the strike at expiry, you lose money; otherwise, you will collect the premium on top of the asset you own.
Your max profit during put selling is always the premium you got - when your asset price is above the strike at expiry. Your max loss is theoretically infinite.