For filing a return, go to your dashboard, click file returns, choose which month’s return you want to file and then choose which return you want to file. Then, enter the details and click on file return. The GST will ask you the signatory’s name, which you have to choose from the drop-down menu and then click on file return with EVC. The GST portal will send you an OTP at your mobile number and email address registered by you. Fill up OTP and click on submit.