Once your wallet is actively connected to an application, it will be automatically triggered when a transaction should be signed. In case your browser blocks popups you will be asked to authorize the transaction request before you will be able to sign your transaction.

https://lh3.googleusercontent.com/WqTlxjLOyPPmt25sk5d_fpVHGmZbW555Xsnt5JgQhvfP7ee7ZiVSqgcoM0XNYhtRRUnoqp3O0CPfEpXp2wBKVcA3b35pDbWP1LOWqZP-arReNnGI2vFG9eBvaEUGh1asENla3gprcONEfygS

https://lh3.googleusercontent.com/fTUDfydO_wsfbXdA_BrZOcAIRmZX_yetL2oVXLI9ZrlF4lx8QVoChoyiRmtT-6w2cWuytnGGYhqLG7hVfbuDQVSdHrUhfsvT4lkTNYM8ZoiU0WfwE8-_CXg0b3rLuSWbYrMYmxuNR2fvAcKx