Authorised signatory for llp pther than designated partners

Hi everyone,

i have a few queries relating to LLP for which i require quick responses,

1) After incroporation of an llp, can the designated partners authorise some else other than the partners to run the business and become the authorised signatory for all purpose?

2) if it is possible, then does this have to be mentioned in the LLP agreement?

3) Apart from these, what else is to be done to make sure all compliances are made? is it enough if the designated partners give a power of attorney to that person?

Thanks in advance.