You will also have to indicate on the application which members are to be ‘designated’. There must be at least two designated members. They will be responsible for carrying out additional statutory duties on behalf of the entire LLP, like filing partnership accounts and annual returns.
The members’ consent to join the LLP must be confirmed on the application. You will do this by checking a ‘consent to act’ box - there is no need to provide any kind of signature.
You and your partners may wish to prepare a partnership agreement at the same time as setting up the LLP. It’s optional but recommended because it sets out the rules for running the business - members’ responsibilities, profit sharing, decision making, etc. You can ask a solicitor to prepare one for you, or you can do it yourself.